Answer: Nobel Gasses
Explanation:
Name one strength and weakness about your volcano expeirment.
Answer:
weakness, There are two conditions that lead to a weak volcanic eruption, low viscosity magma and little presence of trapped gases.
strength, The VEI or (Volcanic Explosivity Index) is a scale that describes the size of explosive volcanic eruptions based on magnitude and intensity. The numerical scale (from 0 to 8) is a logarithmic scale, and is generally analogous to the Richter and other magnitude scales for the size of earthquakes.
Explanation:
i really hope this helps. :)
Giving brainliest, please HELP!
Answer:
absorb
Explanation:
Endothermic reactions absorb energy ....usually feel cold
Briefly explain the source, harmful effects and physical properties of oxides of
nitrogen.
Answer:
Nitrogen reacts with oxygen to form a number of nitrogen oxides. It exhibits different oxidation states in its oxides, ranging from +1 to +5. Oxides of nitrogen having nitrogen in the higher oxidation state are more acidic than that in lower oxidation state. Nitrogen oxides are critical components of photochemical smog. They produce the yellowish-brown colour of the smog. In poorly ventilated situations, indoor domestic appliances such as gas stoves and gas or wood heaters can be significant sources of nitrogen oxides.
Following are the harmful effects caused by the oxides of nitrogen
Nitrogen oxides causes irritation in mucous membrane.
Large concentrations of Nitrogen oxide causes lungs problems in humans
It causes injuries to vegetation by damaging leaves.
Nitrogen oxide oxidizes Hydrocarbons in the presence of sunlight, which causes eye irritation, asthama attacks, nasal and throat infections.
NO: sharp, sweet-smelling, colourless gas. Melting point: -163.6°C. Boiling point: -151.8°C. Relative Density: 1.04 (air = 1) NO2: reddish-brown gas with irritating odour
what happens when burning matchstick is held near the nitrogen gas jar
Explanation:
No observable change because nitrogen is an inert gas...
If 40.0 grams of HCI were dissolved in enough water to make a solution with a total volume of 3.0 liters, what would be the molarity of the solution?
Answer: 0.37 M
Explanation:
HCl has a gram-formula mass of 36.46 g/mol, so 40.0 g is about 40.0/36.46=1.10 mol.
This means that since molarity = (moles of solute)/(liters of solution), the answer is 1.10/3.0 = 0.37 M
What is the molarity of a solution with a volume of 2.3 Liters and 9.7 moles?
Answer:
Explanation:
molarity = (moles of solute)/(liters of solution) = 9.7/2.3 = 4.2
The first time dicaprio heard about global warming, who told him that it was the most important issue of our time.
Why can you calculate the total pressure of a mixture of gases by adding together the partial pres-
sures of the component gases?
Answer:
Dalton's law of partial pressure
Explanation:
In Dalton's law of partial pressure is states that the total pressure of a gas mixture is equal to the sum of the partial pressures of the component gasses.
This is the equation: [tex]P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}[/tex].. so on and so forth.
basically what Dalton is saying partial pressures are just fractions of the total pressure, think of it as if you cut 12 slices of pizza and 12 people grabbed a slice of the pizza. Each person has 1/12 of that pizza, 1/12 x 12 = 1.
let's say there is a container filled with nitrogen gas (N) , hydrogen gas (H), and ammonia gas (NH₃).
N= 40 atm
H=20 atm
NH₃= 10 atm
you would plug this information into this equation: [tex]P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}[/tex]
[tex]P_{N} + P_{H} + P_{NH{3}} = P_{total}[/tex]
[tex]P_{40} + P_{20} + P_{10} = 70[/tex]
N is 40/70 of the gaseous mixture.
H is 20/70 of the gaseous mixture.
NH₃ is 10/70 of the gaseous mixture.
if you add these fractions up:
[tex]\frac{40}{70} +\frac{20}{70} +\frac{10}{70} =\frac{1}{1} =1[/tex]
I really hope this helps a little!
Hi!
Can sportive help me with this pls, I’m really bad at chemistry…
I hope someone helps! Have a nice day !
it's 500kg
Explanation:
I did this I hope this helps
Giving BRAINLIEST, please HELP!
Answer:
-65 kJ
Explanation:
To use Hess's Law, you need to combine the equations in a way that results in the desired equation. To add reactants/products, just add the equations and their subsequent heat of reactions. Subtracting reactants/products involves flipping the signs of enthalpies, duplicating reactants/products involves multiplying the coefficients and enthalpies by a desired number.
A + 2B --> C + D
+ B --> 2C + D
------------------------------------
A + 3B --> 3C + 3D
In this case, you only need to add the equations together to get the desired equation. Because you just add the equations, combine each equations' heat of reaction.
(-20 kJ) + (-45 kJ) = -65 kJ
The overall heat of reaction of the desired reaction is -65 kJ.
What is the solubility of CaCl2 at 20°C
Answer:1,01
Explanation:
A gas collected from a reaction has a mass of 1.211 g and occupies a volume of 0.677 L. The temperature in the laboratory is 296 K, and the air pressure is 0.987 atm. Calculate the molar mass of the gas.
23.7 g/mol
44.0 g/mol
58.5 g/mol
82.3 g/mol
Answer: 44.0 g/mol
Explanation:
[tex]M=m.RT/PV[/tex]
M=1.211*0.082*296/ 0.987*0.677
M= 44 g/mol
A gas collected from a reaction has a mass of 1.211 g and occupies a volume of 0.677 L. The temperature in the laboratory is 296 K, and the air pressure is 0.987 atm the molar mass of the gas 23.7 g/mol. option A is correct.
What is gas law?The universal gas law given by Boyle, Charles , Avogadro and Gauss known as combined gas law with respect to temperature, volume and pressure using universal gas constant and number of moles.
According to universal gas equation or combined gas equation
P V = n R T
where , P = pressure
V = volume
n = number of moles
R = universal gas constant = 8.313
T = temperature
n = W / M.M
W = weight
M.M = molar mass
substituting the value in the equation
0.987 × 0.677 = 1.211 / M.M × 8.313 × 296
M.M = 23.7 g/mol
Therefore, gas collected from a reaction has a mass of 1.211 g and occupies a volume of 0.677 L. The temperature in the laboratory is 296 K, and the air pressure is 0.987 atm the molar mass of the gas 23.7 g/mol. option A is correct.
Learn more about gas law, here:
https://brainly.com/question/1541059
#SPJ5
What is the name of the new technology whereby a glass fiber carries as much information as hundreds of copper wires?
Answer:
Fibre optic technology.
Explanation:
Fibre optic technology, as the name implies, uses light pulses to transmit data via strands of glass or plastic. It's the preferred technology for the government's National Broadband Network (NBN), which offers 100Mbps+ download speeds.
What is primarily destroying the ozone layer of the atmosphere?.
Answer:
CFCs
Explanation:
When CFCs come into contact with sunlight, they divide into molecules. One of those molecules is chlorine, which destroys the ozone.
4. A 14.5-L balloon is in the air where it is 20.0 C at 0.980-atm. A wind passes over and the balloon's pressure becomes 740.0-mmHg and its size adjusts to 14.3-L. What Celsius temperature was the wind?
The temperature of the wind as that decreases the volume and the pressure of the balloon to the given values is 14.09°C.
What is Combined gas law?Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.
It is expressed as;
P₁V₁/T₁ = P₂V₂/T₂
Given the data in the question;
Initial volume V₁ = 14.5LInitial pressure P₁ = 0.980atmInitial temperature T₁ = 20.0°C = 293.15KFinal volume V₂ = 14.3LFinal pressure P₂ = 740.mmHg = 0.973684atmFinal temperature T₂ = ?We substitute our given values into the expression above.
P₁V₁/T₁ = P₂V₂/T₂
( 0.980atm × 14.5L )/293.15K = ( 0.973684atm × 14.3L )/T₂
14.21Latm / 293.15K = 13.92368Latm / T₂
14.21Latm × T₂ = 13.92368Latm × 293.15K
14.21Latm × T₂ = 4081.72679LatmK
T₂ = 4081.72679LatmK / 14.21Latm
T₂ = 287.24K
T₂ = 14.09°C
Therefore, the temperature of the wind as that decreases the volume and the pressure of the balloon to the given values is 14.09°C.
Learn more about the combined gas law here: brainly.com/question/25944795
#SPJ1
In designing the experiment, the researchers used which type of 32p labeled atp?.
In designing the experiment, the researchers used Y32P-ATP.
What is ATP?Adenosine triphosphate (ATP) is an organic substance and a hydro-trope that provides energy for a variety of functions in
living cellsincluding muscular contractionnerve impulse propagationcondensate dissolvingand chemical synthesisResearchers used Y32P-ATP Because the Y-phosphate of ATP is used for phosphoryl transfer by kinases. As a result, Y32P-ATP is required for the experiment.
Hence the used ATP is Y32P-ATP.
To know more about ATP, visit the below link:
https://brainly.com/question/893601
#SPJ1
In what order should the options appear so as to correctly reflect the order of clomiphene's mechanism of action
The order which reflect clomiphene's mechanism of action include the following:
Secretion of increased amount of follicle stimulating hormone (FSH) and LH (luteinizing hormone).Growth of the ovarian follicle.Ovulation.What is Ovulation?This is the process in which a mature egg is released from the ovary and clomiphene is a medication which induces it.
This is done by the steps mentioned above so as to ensure mature egg is released for fertilization.
Read more about Ovulation here https://brainly.com/question/17044166
#SPJ1
I’m confused when it comes to chem
Answer:
The chemistry is the brach of science dealing with properties of matter and the changes which the matter undergo
Explanation:
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE
A linkage between two atoms formed by the sharing of electrons, or attraction is called a.
A covalent bond is formed by the sharing of electrons between 2 atoms.
What is a covalent bond?A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.
Sharing of electrons forms covalent bonds between the atoms.
These bonds are mainly formed between two similar atoms of electronegativity.
Where ionic bonds are formed by sharing electrons where there is an electronegativity difference between metals and non-metals. Ex. NaCl
Hence, a covalent bond is formed by the sharing of electrons between 2 atoms.
Learn more about covalent bond here:
https://brainly.com/question/19382448
#SPJ1
Explain the effect of carbon dioxide on the ph of the oceans.
Answer:
When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean's pH (a measure of how acidic or basic the ocean is) drops.
Explanation:
hope this helps
Can someone please help me? :(
Answer:
D. Extremely high pressure
B. Unusally high oxygen Levels
Sorry about that
becasue there is not ice on the bottum of the ocean it is really hot and unever terran it becasue of big rock forming together they all ready figurd that out
Hope This Helps
Answer:
D and B
Explanation:
i need help pls this isnt chemistry btw i just couldnt find science so i had to put that
Answer: 1. 10% is used to live 30% is stored.
2. an educated guess.
Explanation:
Lilly took 57% seconds to walk for classroom to library if the distance between the classroom and library was 38 m at what average speed did lily walk m/min
Answer:
2.17 seconds i believe.
Explanation
I took the amount of meters and turned them into feet before dividing the amount of feet by the total amount of seconds it took for her to travel to the classroom library
i need help for this pleeeeeeeeeezzzzzzzzzz
Answer:
A
Explanation:
did this before
The teacher prepares 2.50 liters (l) of a salt solution for a class experiment. how many quarts (qt) are in 2.50 l? (1 l =1.06 qt) 2.17 qt 2.36 qt 2.52 qt 2.65 qt
The teacher prepares 2.50 liters (l) of a salt solution for a class experiment, in this quantity 2.65 quartz are present.
What is conversion factor?Conversion factor is a quantity which will be multiplied or divide with any other measurement for the conversion of that measurement.
Given that quantity of salt solution = 2.50 L
We know that, 1 L = 1.06 qt
Here conversion factor is 1.06 qt/L as it will be multiplied on given measurement to convert into quartz as:
2.50L = 2.50L × 1.06qt/L = 2.65qt
Hence required value is 2.65qt.
To know more about conversion factor, visit the below link:
https://brainly.com/question/97386
Answer:
2.65 qt
Explanation:
Please help witht 4 and 5
Answer:
#4: 0.89 mol/L #5: 0.36 mol
Explanation:
#4: Morality is Moles/ Liters
So take 3.2 mols ÷ 3.6 L = 0.8888... since there are 2 sig figs in the question the answer would round to 0.89 mol/L
#5: to find the number of moles needed, you take the mol/L and multiply that by the volume.
0.89 mol/L ×0.400L = 0.356 mols. the liters cancel out. Since 0.89 has the least number of sig figs your final answer should have 2. which it 0.36 mols.
I hope this helps, good luck!
When referring to immunity, what does the term innate imply?
the mechanism will provide defense against many different types of pathogens
the mechanism will develop based upon exposure to specific pathogens
the mechanism will be built-in and present at birth
the mechanism will be acquired over an individual's lifetime
Answer:
The answer should be A. the mechanism will provide defense against many different types of pathogens :)
Have an amazing day!!
Please rate and mark brainliest!!
The results of a titration experiment were as follows:
# Volume of aqueous NaOH pipetted into the conical flask = 10. 00 mL
# Average volume of dilute HCl added from the burette to reach the endpoint
12. 54 mL
Molarity of the dilute HCI=1. 196 M
(a). Write the chemical reaction equation for the titration reaction.
The equation of the titration of hydrochloric acid and sodium hydroxide is given as:
[tex]NaOH + HCl \rightarrow NaCl + H_2O[/tex]
What is a chemical reaction equation?An equation of a chemical reaction is a way of representing chemical reactions that occur using the symbols or chemical formula of the compounds reacting.
The titration of hydrochloric acid and sodium hydroxide is a chemical reaction which the given equation:
[tex]NaOH + HCl \rightarrow NaCl + H_2O[/tex]
Therefore, the reaction is a neutralization reaction.
Learn more about chemical reaction at: https://brainly.com/question/11231920
#SPJ1
Question 19 of 25
Which of the following characteristics would make a gas non-ideal?
A. The gas molecules move in a random pattern.
B. The gas molecules possess kinetic energy.
C. The gas molecules interact with one another.
D. The gas molecules exert pressure on a container.
SUBMIT
Answer: the gas molecules interact with one another
Explanation:
According to the forces of attraction, the gas molecules interacting with one another makes a gas non - ideal.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
Learn more about forces of attraction,here:
https://brainly.com/question/23841038
#SPJ2
What does radioactive mean
Answer:
emitting or relating to the emission of ionizing radiation or particles
Explanation:
Radiation can damage the DNA in our cells.
In other words!
the giving off of rays of energy or particles by the breaking apart of atoms of certain elements (as uranium)