Identify each of the reactions as synthesis (S), decomposition (D), combustion (C), single replacement (SR) or double replacement (DR).
Answers
B—DR
C—D
D—SR
E—DR
F—SR
G—S
H—D
I—S
J—SR
Identifying each reaction with their correct term
Reaction A Synthesis ( S )Reaction B Double replacement ( DR )Reaction C Decomposition ( D )Reaction D Single replacement ( SR )Reaction E Double replacement ( DR )Reaction F Single replacement ( SR )Reaction G Synthesis ( S )Reaction H DecompositionReaction I Synthesis ( S )Reaction J Single replacement ( SR)What is double replacement reactionA double replacement reaction is a type of chemical reaction whereby two reactants exchanges its ions ( cations or anions ) to produce two new products. It can also known as a double displacement reaction. while a single replacement reaction leads to the substitution of one element for another in chemical compound.
Hence we can conclude that the answers to your questions are as listed above.
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Related Questions
Where on the periodic table do you find elements that have 'full' valence electron shells and are thus stable and unreactive? (1 pt)
*
1 point
on the left side of the periodic table
on the right side of the periodic table
across the top of the periodic table
across the bottom of the periodic table
in the middle of the periodic table
scattered around the periodic table
Answers
Elements that have 'full' valence electron shells and are thus stable and unreactive are found at rightmost side of the periodic table.
What is valence electron?The electrons in an atom's outermost shell, or energy level, are called valence electrons.
For instance, the valence electrons of oxygen are six, with two in the 2s subshell and four in the 2p subshell.
The noble gases—helium, neon, argon, krypton, xenon, and radon—belong to the group (family) of elements that have complete outer shells.
Element 118, oganesson, also belongs to this group, although almost all of its chemical and physical properties are yet unknown.
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A compound has an empirical formula BH3 and a molar mass of 27.6 g/mol. What is the molecular formula of the
compound?
Answers
The molecular formula of the compound having an empirical formula BH₃ and a molar mass of 27.6 g/mol is B₂H₆.
Empirical formula is the whole number ratio of the atoms which are present in the compound.
Molecular formula is the number of atoms of each element present in one molecule of compound.
Given -
Empirical formula = BH₃
Molar mass = 27.6 g/mol
We must find the empirical mass of the compound,
Molar mass of B = 10.8 amu
Molar mass of H = 1.00 amu
Therefore,
Empirical mass = 10.8 amu + (3 x 1.00) amu = 13.8 amu
To find molecular formula, we divide the molecular mass by the empirical mass. So,
Molecular formula = Molecular mass
Empirical mass
Molecular formula = 27.6
13.8
Molecular formula = 2
Hence, the molecular formula of the compound is BH₃ = B₁ₓ₂H₃ₓ₂ = B₂H₆
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Which compounds in biochemistry contain nitrogen? (Will give brainliest)
Answers
Answer:
Amino acids, nucleic acids, and nucleobases are key biological nitrogen compounds.
Explanation:
Answer:
amines and amides
Explanation:
If we are talking organic/biochemistry only I would say amines and amides
freon-12 is used as a refrigerant in air conditioners and as a propellant in aerosol cans. calculate the number of molecules of freon-12 in mg of freon-12. what is the mass of chlorine in mg of freon-12?
Answers
Freon-12 or dichlorodifluoromethane is a common refrigerant and propellant. 5.69 mg of Freon-12 contains 2.8 × 10¹⁹ molecules and the mass of Cl in Freon-12 is 0.94049 gm.
What is Freon-12?Freon-12 (CCl₂F₂) is a gas that was used in manufacturing propellants and refrigerants. It is a non-inflammable gas also called dichlorodifluoromethane.
Molar mass of CCl₂F₂ = 1 × 12g/mol + 2 × 35.5g/mol + 2 × 19g/mol = 121g/mol
Molecules in 5.69 mg Freon-12 are calculated as:
5.69 mg × 0.001 gm × 1 mol × 6.02 × 10²³ molecules ÷ 121 gm = 0.0002830 × 10²³ molecules = 2.8 × 10¹⁹ molecules
There are two chlorine atoms in a Freon-12 compound so the mass is calculated as:
(5.69 × 0.001 × 2) ÷ 121 = 0.94049 gm of Cl
Therefore, 0.94049 gm of Cl is present in Freon -12.
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Your question is incomplete, but most probably your full question was, that Freon-12 (CCl₂F₂) is used as a refrigerant in air conditioners and as a propellant in aerosol cans. Calculate the number of molecules of Freon-12 in 5.69 mg of Freon-12. What is the mass of chlorine in 5.69 mg of Freon-12?
My pen weighs 24.08grams and when dropped in a graduated cylinder of water that has initial volume of 43mL and final volume 56mL . What is the density of the pen?
Make sure you write you answer with proper sig figs. Density = mass/volume
Answers
Taking into account the definition of density, the density of the pen is 1.8523 g/mL.
Definition of densityDensity is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space and it is a quantity that allows to measure the amount of mass in a certain volume of a substance.
The expression for the calculation of density is:
density= mass÷ volume
From this expression it can be deduced that density is inversely proportional to volume.
Density of the penIn this case, you know that:
Mass of the pen= 24.08 gInitial volume= 43 mLFinal volume= 56 mLVolume of the pen= Final volume - Initial volume= 56 mL - 43 mL= 13 mLReplacing in the definition of density:
density= mass of the pen÷ volume of the pen
density= 24.08 g÷ 13 mL
Solving:
density= 1.8523 g/mL
In summary, the density of the pen is 1.8523 g/mL.
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what is the symbol for the element with an electron configuration of 1s^22s^22p^31s 2 2s 2 2p 3 1, s, squared, 2, s, squared, 2, p, cubed?
Answers
The correct answer is Nitrogen.
From the given question the electronic configuration of the element is given as:
1s²2s²2p³
hence, we know that the maximum no of electrons in the sub-shell
s= 2
p=6
while in this p has only 6 electrons.
Thus by counting the number of electrons in each sub-shell we can know the atomic number as several electrons in an atom is equal to the atomic number of the atom.
thus, the no of electrons present is- 2+2+3= 7
For, 7 electrons the element present will be nitrogen with atomic number 7.
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How do I do this equilibrium constant problem?[Ap Chem]
Answers
The equilibrium constant of the second reaction is 2.0 * 10^-3.
What is the equilibrium constant?Let us recall the the equilibrium constant shows the extent to which reactants are converted into products in a reaction. A large positive value of the equilibrium constant shows that most of the reactants is converted into products.
Now we can see that the second reaction is obtained when the first reaction is halved and inverted. This now means that we can write;
K2 = 1/K1^1/2
K2 = 1/√K1
K2 = 1/(2.5 * 10^5)
K2 = 2.0 * 10^-3
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7. Complete the following table, comparing forces within atoms.
Answers
The four fundamental forces in the universe are:
Electromagnetic force
This is the force that produces electrical and magnetic effects in objectsCompared to our solar system- planets don't fall into the SunStrong Nuclear force
Attractive force between the proton and the neutron in the nuclei of atomsStrongest force known to scienceWeak Nuclear force
A force that is significant when atoms break apartIt cause the conversion of a neutron into a proton, an electron and an antineutrino.Anti-gravitational force
It is the weakest force in the universeAn unsolved mystery in scienceWhat are forces?Forces refers to any agent which causes a change in the motion or state of rest of a body.
Forces are also described as push or pull agents that change the motion or position of a body when that are applied to that body.
There are four fundamental forces in the universe and they are given below as follows:
Electromagnetic force:
This is the force that produces electrical and magnetic effects in objectsCompared to our solar system- planets don't fall into the SunStrong Nuclear force:
Attractive force between the proton and the neutron in the nuclei of atomsStrongest force known to scienceWeak force
A force that is significant when atoms break apartIt cause the conversion of a neutron into a proton, an electron and an antineutrino.Anti-gravitational force
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If you have any two gases in different containers that are the same size at the same pressure and same temperature, what is true about the moles of each gas?.
Answers
When gases in two different containers are same , at same temperature, and same pressure then the number of moles must also be same.
Why the number of moles are same?See we know then if the gases with same temperature and pressure have the same number of mole then it clearly means that their volume is not same.And when we add two different gases in a same container it also turned out to be a solution because it is then a homogenous mixture.It all depends on how much amount of gas you are adding in a given container , it can be a great amount and small amount .But no matter of amount , if you add it and the amount increases then volume will definitely increase and vice-versa.To know more about mole visit:
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Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy. c6h12o6 6o2 → 6co2 ?h2o energy based on the law of conservation of matter, what is the missing coefficient for water?
Answers
On the basis of the law of conservation of matter, the missing coefficient for water is 6 in the process of cellular respiration. Thus, the correct option is 1.
What is cellular respiration?It is possible to define cellular respiration as a chemical process that results in the breakdown of food inside the cell and the release of ATP, which is a type of energy.
It entails the chain of chemical processes through which organic materials are oxidized to provide energy to living things.
The left side of the equation has 6 molecules. The equation must be balanced so it must be 6 for the coefficient of water.
C₆H₁₂O₆
Thus, the correct option is 1. six, 6.
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The question is incomplete. Your most probably complete question is given below:
1. 6
2. 8
3. 4
4. 2
Draw the conjugate acid for the following base (lone pairs do not have to be drawn):
Answers
move double bond add line pairs to Oxygen and make negative then move a double bond into the hexagon
a solution of sodium bicarbonate is prepared by adding 45.00 g of sodium bicarbonate to a 1.00-l volumetric flask and adding distilled water until it reaches the 1.00-l mark. what is the concentration of sodium bicarbonate in units of (a) milligrams per liter, (b) molarity, (c) normality, and (d) milligrams per liter as caco3?
Answers
Concentration refers to the amount of substance present.
What is concentration?
The term concentration refers to the amount of substance present. There are many units that could be used for concentration of a solution. This makes reference easy.
To express the concentration in milligram per liter;
45/1000/1 L = 0.045 mg/L
To express the concentration in molarity;
Number of moles = mass/molar mass = 45.00 g /106 g/mol = 0.42 moles
Molarity = 0.42 moles/1 L = 0.42 M
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Can someone please help me write a poem about scientific law vs scientific theory?
Answers
do elements in your body occur as free elements?
Answers
Answer: The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.
Explanation:
a chemist must prepare of aqueous aluminum sulfate working solution. she'll do this by pouring out some aqueous aluminum sulfate stock solution into a graduated cylinder and diluting it with distilled water. calculate the volume in of the aluminum sulfate stock solution that the chemist should pour out. round your answer to significant digits.
Answers
The aluminum sulfate stock solution should the chemist pour out is 219.8 ml
Complete Question
A chemist must prepare 400 mL of 1.00M aqueous aluminum sulfate working solution. He'll do this by pouring out 1.82 mol/L aqueous aluminum sulfate stock solution into a graduated cylinder and diluting it with distilled water. How many mL of the aluminum sulfate stock solution should the chemist pour out?
The aluminum sulfate stock solution should the chemist pour out is 219.8 ml
Given:
V1 = 400ml, M1 = 1 M, V2 = ?, M2 = 1.82 M
Hence, the relation between molarity and volume is as follows.
M1V1 = M2V2
1.00M x 400ml = 1.82 x V2
V₂ = 219.8 ml
Thus, we can conclude that 219.8 ml of the aluminum sulfate stock solution should the chemist pour out.
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solve this problem. a sample of liquid aluminum with mass of 4.39g. the density of liquid aluminum is 2.7 g/cm3. what is the volume of this sample?*1 point
Answers
The more the volume of the substance less dense will be the substance. The sample of liquid aluminum with a density of 2.7 g/cm³ has a volume of 1.62 cm³.
What is the relation between volume and density?The volume has been the space that is in inverse relation to the density of the substance and gets increased with less dense substances while decreasing with more dense substances.
Given,
Mass of aluminum = 4.39 gm
Density of aluminium = 2.7 g/cm³
The volume of Al is calculated as:
Volume = Mass ÷ Density
V = 4.39 ÷ 2.7
= 1.62 cm³
Therefore, the volume of liquid aluminum is 1.62 cm³.
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A cup of gold colored metal beads was measured to have a
mass 425 grams. By water displacement, the volume of the
beads was calculated to be 47.5mL. Given the densities listed in
Answers
The density of the gold colored metal beads if mass is 425 g and volume of 47.5mL is 8.9 g/mL.
What is density?Density is defined as the ratio of the Mass of the substance to the volume of the substance.
It's SI unit is kg/m3.
It is denoted by ρ or rho.
Density = mass/volume
From the given data, we noticed that,
Mass of gold colored metal beads = 425g
Volume of the gold colored metal beads = 47.5mL.
By substituting all the value, we get
= 425/47.5
= 8.9
Thus, we concluded that the density of the gold colored metal beads if mass is 425 g and volume of 47.5mL is 8.9 g/mL.
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17. How are the separation methods for homogeneous and heterogeneous mixtures compared?
A homogeneous mixture can be separated chemically, while a heterogeneous mixture can be separated physically.
A homogeneous mixture could be separated through distillation, while a heterogeneous mixture could be separated through filtration.
A homogeneous mixture could be separated through filtration, while a heterogeneous mixture could be separated through distillation.
A homogeneous mixture can be separated physically, while a heterogeneous mixture can be separated chemically.
Answers
The way in which the separation methods for homogeneous and heterogeneous mixtures are compared is as follows: a homogeneous mixture could be separated through distillation, while a heterogeneous mixture could be separated through filtration (option B).
What are homogeneous and heterogeneous mixtures?A homogeneous mixture is a type of mixture that is uniform throughout, and has only one phase.
A heterogeneous mixture is that which is separated into different regions or phases that have different compositions or properties.
Both homogeneous and heterogeneous mixtures can easily be separated by physical means, however, since homogeneous mixtures are even in composition, they can be separated by distillation.
Therefore, the way in which the separation methods for homogeneous and heterogeneous mixtures are compared is as follows: a homogeneous mixture could be separated through distillation, while a heterogeneous mixture could be separated through filtration.
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Answer:
A homogeneous mixture can be separated physically, while a heterogeneous mixture can be separated chemically.
Explanation:
what safety rule does not apply to the organic chemistry laboratory? no eating, drinking, or smoking in the laboratory. wear proper clothing at all times. wear enclosed safety goggles at all times while in the laboratory. follow all safety instructions in the laboratory text or given by the teaching assistant. none of the choices are correct.
Answers
Safety rules are the regulatory actions that need to be followed to prevent any danger. Following all safety instructions in laboratory text or by assistant does not apply in an organic chemistry lab. Thus, option D is correct.
What are laboratory safety rules?Laboratory safety rules are the guidelines that are supposed to be followed by the person working in the laboratory while performing the experiments. While working in the organic chemistry lab one should never remove the equipment.
One should wear safety goggles and should not perform the experiments in absence of a teaching assistant. But it is not necessary to follow all the rules in the laboratory textbook.
Therefore, in option D. all rules of the information textbook are not necessary to be followed.
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What charge will elements in group 2 (also identified as IIA) typically have when forming ionic compounds? Example: Magnesium (Mg, #12) (1 pt)
*
1 point
+1
+2
-1
-2
Answers
Elements in group 2 have a charge of +2 while forming ionic compounds.
While forming ionic compounds , elements of group 2 loose 2 electrons from their valence shell as a result of which charge of +2 is generated on them as electrons are negatively charged.
How does charge vary in the periodic table?As like all the other periodic trends, charge also varies across the periodic table. On moving down the group, as number of valence electrons do not change as a result of which charge too does not change along a group.
But, while moving across a period as electrons are added to the same shell the number of valence electrons no longer remains same rather it increases and so does the charge.
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1. Blood is an example of which level of organization
Answers
In the bicarbonate buffering system, carbon dioxide and water join to form ___________, which dissociates into hydrogen and ________________.
Answers
In the bicarbonate buffering system, carbon dioxide and water join to form carbonic acid, which dissociates into hydrogen and bicarbonate.
Why bicarbonate is an excellent buffering system?Bicarbonate is an excellent buffering system because this compound can bind free hydrogen ions (H+) and thus the system avoids sudden changes in the pH of a solution.
In conclusion, in the bicarbonate buffering system, carbon dioxide and water join to form carbonic acid, which dissociates into hydrogen and bicarbonate.
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a chemist adds of a calcium bromide solution to a reaction flask. calculate the mass in grams of calcium bromide the chemist has added to the flask. round your answer to significant digits.
Answers
The mass of Calcium bromide added in the flask is 29.7 g.
What is Molarity?Molarity is defined as the ratio of number of moles od solute to the number of volume of solution in litres.
Molarity = number of moles/ volume
Calculation of MolesNumber of moles = Molarity × volume
Given,
Molarity of Calcium bromide = 0.363 M
Volume of Calcium bromide = 410 mL
= 0.410L
By substituting all the value, we get
Number of moles = 0.363 × 0.410
= 0.148 mol
As we know that,
Molar mass of Calcium bromide = 199.89 g
What is Mole?Mole is defined as the given mass of substance to the molar mass of substance.
Given mass = Moles × Molar mass
= 0.148 × 199.89
= 29.75 g
= 29.7 g (significant digit)
Thus, we calculated that the mass of Calcium bromide added in the flask is 29.7 g.
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DISCLAIMER:
The above question is incomplete. Below is the complete question
A chemist adds 410.0mL of a 0.363 M calcium bromide solution to a reaction flask. calculate the mass in grams of calcium bromide the chemist has added to the flask. round your answer to 3 significant digits.
An oxide of iron is found to be 70. 00% iron by mass. Determine the empirical formula for this compound and name it.
Answers
The empirical formula of iron oxide is Fe2O3 and its name is ferric oxide.
Given:
Percentage of iron by mass = 70%Molar mass of iron = 55.85Percentage of oxygen by mass =30 %Molar mass of oxygen =16Solution:
Now, calculate the relative mass of iron in iron oxide = Percentage of iron by mass / At. mass of iron
Relative mass of iron = 70/55.85 = 1.25
Relative mass of oxygen = Percentage of oxygen by mass / At. mass of iron = 30/55.85 = 1.88
Now the calculate the molar ratio of iron to oxygen = 1.25 : 1.88 = 2:3
Thus, the empirical formula of iron oxide is Fe2O3 and its name is ferric oxide.
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Sourav was heating oil to fry potato chips. The cooking oil all of a sudden caught fire. He took water to pour on the fire to extinguish it. But meanwhile his mother came and switched off the gas and covered the wok completely with a plate.
• Do you think pouring water to the burning oil would have worked? Why?
• Do you think what Sourav’s mother had done is right? Why?
• Can you suggest other ways in which we can stop fire due to burning
oil?
• What values of Sourav and Sourav’s mother are shown here?
Answers
Pouring water on an oil fire will not work, it will spread the oil and spread the fire because oil and water do not mix. It could also splash the hot oil onto Sourav and burn him.
Sourav’s mother did the right thing.
By turning off the gas she eliminated the heat source. By covering the wok she eliminated oxygen that the fire requires to burn. Covering the wok also prevented the fire from spreading.
Another way to stop the fire would be a kitchen fire extinguisher which would put the fire out quickly. If you don’t have an extinguisher, you can pour salt on a small fire to smother it, or pour baking soda on it (not baking powder) chemically extinguishes it.
The values shown are a son helping his mother in the kitchen and his mother showing him a science lesson of how to properly extinguish an oil fire
URGENT!!! PLEASE ANSWER NOW! Which term describes the distribution of charges in a water molecule?
polar
even
negative
organic
Answers
Polar term describes the distribution of charges in a water molecule
In water molecule polar charges are seen and polar means a molecule that has a charge on one side of the molecule that is not cancelled out it has a region of partial charge one end is slightly positive and one end is slightly negative they are generally asymmetric that's why the geometry of water is bent and with an uneven distribution of the electron in the water molecule hydrogen is positive and hydroxide is negative means H⁺OH⁻ that's why water is polar molecule
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3. Kristen was arrested for stealing 6.532 tons of gold from the armory in North Carolina.
She escaped capture for 2.45 days; until she was picked up on the side of the road for
jaywalking. At this time, she had had already hid some of the gold, but had 2.34 tons of
gold still with her. The gold with her was confiscated by police. a) How much money did
she make from the gold? b) How much room/volume does the gold take up?
a)
Answers
1,63760 money she make from the gold and volume of gold take 5.295 volume is the amount of space occupied by a substance
Here given data is kristen was arrested for stealing 6.532 tons and then She escaped capture for 2.45 days and then she had already hid some of the gold, but had 2.34 tons of gold still with her
We have to find how much money did she have if 2.34 tons of gold still with her = ? and how volume does gold take up = ?
Volume is the amount of 3D space a substance or object occupies
We have to convert 2.34 tons into money
Then 2.34 tons = 1,63760 money
And the formula to find volume is:
volume = mass/density
Mass of gold = 196.96 and density = 18.31
Volume = mass of gold / density
Volume = 196.96 / 18.31
Volume = 5.295
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If I have 3.40 moles of gas at a pressure of 1.20 atm, a volume of 31.00 liters, what
temperature is the gas?
Answers
The temperature of the gas is 133.42 kelvin.
Assuming that the gas in the question is ideal, we can apply the ideal gas equation which is as follows:
PV = nRT
Here P is the pressure of the gas = 1.20 atm
V is the volume of the gas = 31.00 liters
N is the number of moles = 3.40 moles
R is the universal gas constant = 0.0821 L atm
T is the temperature of the gas =?
Putting the values in the above equation:
1.20 x 31.00 = 3.40 x 0.0821 x T
T = 1.20 x 31/3.40 x 0.0821
T = 133.42 K
Thus, the temperature of the gas is 133.42 kelvin.
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HELP ME THIS IS MY FINAL QUESTION
All of the following are procedures used to reduce the amount of acid rain in the environment except...
Select one:
a. requiring that catalytic converters be installed on new automobiles.
b. installing scrubbers in smokestacks.
c. separating sulfur from coal before it is burned.
d. using leaded gasoline in automobiles.
Answers
All of the given procedures are used to reduce the amount of acid rain in the environment except using leaded gasoline in automobiles; option D.
What is acid rain?Acid rain refers to the condition in which oxide gases of non-metals released from combustion of fossil fuels dissolve in rain water to form acids which is then called acid rain.
Acid rain is mainly formed when sulfur oxides and nitrogen oxides released from combustion of fuels dissolve in rainwater.
Acid rain results in polluted water an also affects the organisms found in the environment.
Some procedures used to reduce the amount of acid rain in the environment include:
requiring that catalytic converters be installed on new automobiles.installing scrubbers in smokestacks - scrubbers remove harmful particles and gases from industrial exhaust smokeseparating sulfur from coal before it is burned to prevent formation of sulfur oxideTherefore, using leaded gasoline in automobiles will not reduce the amount of acid rain in the environment.
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what is a wire guage use for in chemis
try
Answers
Answer:
Hello How are you
Explanation: the answer might be Screenshot
Answer: Wire gauze is an essential piece of supporting equipment in a laboratory as glassware cannot be heated directly with the flame of a Bunsen burner, and requires the use of wire gauze to diffuse the heat, helping to protect the glassware.
Explanation: