Answers
Answer:
Try quizlet, they have everything on there
Explanation:
Related Questions
What quantity of copper is deposited by the same quantity of electricity that deposited 9g of aluminum
Answers
Answer:
Mass of copper deposited = 31.75 g
Explanation:
According to Faraday's second law of electrolysis, when the same quantity of electricity is passed through different electrolytes, the relative number of moles of the elements deposited are inversely proportional to the charges on the ions of the elements.
From this law, it can be seen that the higher the charge, the lower the number of moles of a given element deposited.
Number of moles of aluminium in 9 g of aluminium = mass / molar mass
Molar mass of aluminium = 27 g
Number of moles of aluminium = 9/27 = 1/3 moles
Charge on aluminium ion = +3
3 moles of electrons will discharge 1 mole of aluminium,
1 mole of electrons will discharge 1/3 moles of aluminium
Number of moles of electrons involved = 1 mole of electrons
Charge on copper ion = +2
1 mole of electrons will discharge 1/2 moles of copper.
Mass of 1/2 moles of copper = number of moles × molar mass of copper
Molar mass of copper = 63.5 g
Mass of copper deposited = 1/2 × 63.5 = 31.75 g
The Himalayan balsam plant makes seeds in pods and releases them when it is ready, while the Surinam toad absorbs its eggs into its own back until they are ready to come out. How are the adaptations of the balsam and the toad similar?
A: They are behaviors that allow the plant and the animal to reproduce through shorter life cycles.
B: They are behaviors that protect the plant and the animal from predators.
C: They are life cycle differences that protect the offspring and help them to survive.
D: They are physical characteristics that allow the offspring to survive in cold weather conditions.
Answers
Answer:a
Explanation:
Answer:
A
Explanation:
why is science so disgusting?
Answers
STEP BY STEP: A+B(x)
what is elastic energy
Answers
Answer:Elastic energy is energy stored in an object for temporary strain. It is basically potential energy.
What are some things that all plants need to grow?
Answers
Answer:
sunlight, water, carbon dioxide, soil, are the basics which you also have phosphorus and nitrogen
State the four things that make up your
health:
Answers
Answer: “Health is a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity or diet, exercise, mental and social.
zinc + hydrogen arsenate—>
What type of reaction is this? (Synthesis, Decomposition, or Single Replacement?
Answers
Answer:
Single Replacement
Explanation:
im just smart lol
A covalent bond is formed when two atoms reach a stable state that balances:
MARK TWO RESPONSES
A
the repulsion between the nucleus protons of one atom to the electrons of the other atom
B
the attraction between the nucleus of one atom to the electrons of the other atom
C
the attraction between the two nuclei of the atoms, which both contain protons
D
the repulsion between the two nuclei of the atoms, which both contain protons
Answers
Answer:
B and I think A but you may want a secon opinion on that
Explanation:
I know that electrons are shared with covalent bonds so I assume the 2 answers are the ones with electrons it them
Explanation : ^
1. Write the chemical symbol for each of the following elements.
Aluminum
Beryllium
Calcium
Flourine
Neon
Nitrogen
Silicon
Silfur
2. Write the name of the element for each of the following symbols.
Ar
B
Li
Na
Fe
3. What is the atomic number for the following elements?
C
Fe
Pb
O
N
Zn
Answers
Answer:
Chemical symbol:
Aluminum:Al
Berylium: Be
Calcium: Ca
Flourine: F
Neon: Ne
Nitrogen: N
Silicon: Si
Silfur: S
Element name
Ar: Argon
B: Boron
Li: Lithium
Na: Sodium
Fe: Iron
Atomic number
C:6
Fe: 26
Pb: 82
O: 8
N: 7
Zn: 30
Answer:
aluminum- Al
beryllium- Be
calcium- Ca
flourine- F
neon- Ne
nitrogen- N
silicon- Si
sulfur- S
_____________________________________________________
Ar- argon
B- boron
Li- lithium
Na- sodium
Fe- iron
______________________________________________________
C- 6
Fe- 26
Pb- 82
O- 8
N- 7
Zn- 30
Explanation:
An unknown amount of sodium azide (NaN3) reacts and produces 0.033 moles of nitrogen gas. What mass of sodium metal is produced
Answers
Answer:
Mass of sodium metal is 130.87 gram
Explanation:
The complete reaction is
2 NaN3 --> 2 Na + 3 N2
We know that PV = nRT
n = [tex]\frac{PV}{RT}[/tex]
On substituting the given values, we get
[tex]n = \frac{\frac{99707}{101325}*75 }{0.082 *(273.15 +15)} \\n = 3.02[/tex]moles of N2
Sodium azide's molar mass
3.02 *(2/3) = 2.013 moles
Mass = 2.03 * 65.01 = 130.87 gram
2. Which of the following is/are TRUE regarding net ionic equations?
A. Net ionic equations show only the particles directly involved in the
chemical change.
B. Spectator ions are included in complete equations, but not in net ionic
equations.
C. lonic charges do not need to be balanced in a net ionic equation.
D. Combustion, combination, and decomposition reactions can be written as
net ionic equations.
Answers
A and B are true.
C and D are false.
Out of the given four statements, A and B are only correct.
Explanation:
In the complete equation of a chemical reaction, the complete symbols of reactants and products are written along with states of matter under conditions at which the reaction is taking place.In the net ionic equation of a chemical reaction, only those chemical species are written which directly participating in the chemical reaction.The mass and charge in the net ion equation must be balancedIt is used in neutralization reactions, redox reactions, double displacement reactions.So from this, we can conclude that out of the given four statements, A and B are only correct.
Learn more about the net ionic equation here:
brainly.com/question/7018960?referrer=searchResults
brainly.com/question/19510514?referrer=searchResults
Plz someone help, really struggling
How many liters of carbon monoxide are needed to react with 32.65 g oxygen gas to produce carbon dioxide?
Answers
Answer:
22.9 Liters CO(g) needed
Explanation:
2CO(g) + O₂(g) => 2CO₂(g)
? Liters 32.65g
= 32.65g/32g/mol
= 1.02 moles O₂
Rxn ratio for CO to O₂ = 2 mole CO(g) to 1 mole O₂(g)
∴moles CO(g) needed = 2 x 1.02 moles CO(g) = 2.04 moles CO(g)
Conditions of standard equation* is STP (0°C & 1atm) => 1 mole any gas occupies 22.4 Liters.
∴Volume of CO(g) = 1.02mole x 22.4Liters/mole = 22.9 Liters CO(g) needed
___________________
*Standard Equation => molecular rxn balanced to smallest whole number ratio coefficients is assumed to be at STP conditions (0°C & 1atm).
Under what conditions is a real gas closely approximated by an ideal gas?
Answers
Which of the following is not a compound?
Cl
CO2
NaCl
HCl
Answers
The Concrete that surrounds a swimming pool takes less time to heat up than the water in the pool. Why
Answers
Answer:
The Concrete has a lower specific heat.
Explanation:
Two reactant particles collide with proper orientation. The collision will be
effective if the particles have
(A) sufficient potential energy
(B) high activation energy
(C) high ionization energy
(D) sufficient kinetic energy
And explain why
Answers
Answer: D) Sufficient kinetic energy
Explanation:
chem question!!
please help!!!
Answers
If 5.7 mol Cl2 reacts with Na , how many grams of NaCl could be formed? The
molar mass of NaCl is 58.44 g/mol
Answers
Answer:
666.22grams
Explanation:
The balanced chemical equation of this reaction is given as follows:
2Na + Cl2 → 2NaCl
Based on the above equation, 1 mole of Chlorine gas (Cl2) is needed to produce 2 moles of sodium chloride (NaCl).
Therefore, 5.7moles of Cl2 will react to produce (5.7 × 2) = 11.4moles of NaCl.
Note that, the mass of NaCl was asked in this question. We find the mass of NaCl from the mole by using the formula;
moles = mass/molar mass
Molar mass of NaCl = 58.44 g/mol
11.4 = mass/58.44
mass = 58.44 × 11.4
mass = 666.22grams.
What 2 phases of the water cycle most affect the imbalance of each of these?
Answers
Answer:
gas and leqwed
Explanation:
leqwed goes to gas
Answer: evaporation and precipitation
What are the four organelles that process, transport, and stone materials?ANSWER QUICK PLZZ no website
Answers
what is the number of moles of solute in 250 mL of a .80M solution
Answers
Answer:
There are 0.1 moles of solute in 250 mL of 0.4 M solution
Explanation:
because it is
For this reaction: ____NH3 + ____O2 ____NO + ____H2O a. How many moles of oxygen are needed to react with 3.24 moles of ammonia?
Answers
Answer:
uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh this is hard I'm a come back when I solve it
Will carbon and hydrogen atoms most likely form an ionic bond or a covalent bond?
Answers
Balance the following equation: Fe2O3 + H2O --> Fe(OH)3
A.3,2,1
B.2,2,3
C.1,3,2
D.5,2,10
Answers
Answer:
answer is c
Explanation:
hope it helps!!!
How are ball and sticks and space filling are similar ?
Answers
Answer:
Ball and stick models are three-dimensional models where atoms are represented by spheres of different colors and bonds are represented by sticks between the spheres. ... Space fill models are similar to ball and stick models in that they are three-dimensional models that represent atoms as colored spheres.
Zr + O ⇒
B + O ⇒
Zn + C ⇒
Co + I ⇒
Mg + Br ⇒
Answers
WHAT- WHAT GRADE R YOU IN 0,0
Calculate the pH is the
concentration of [H+] = 1.00x 10^-11
Answers
Answer:
1e - 11
Explanation:
A mass of 0.30 kg is attached to a spring that has a spring constant of 210 N/m. What will be the period of this system?
Answers
Answer:
its A hope this helps
Explanation:
A gas is most likely to change the liquid phase in the pressure of the gas
Answers
Answer: if pressure rises in closed vessel and temperature is low enough,
Gas may condense to liquid state
Typically, this happens when we raise the pressure at room temperature, but there are other situations that aren't covered, including lowering the temperature at room pressure.
What is temperature?Temperature is defined as a measurement of an object or substance's warmth or coldness in relation to a standard value. As opposed to extensive characteristics, like mass or volume, temperature is referred to as an intense property—one that is independent of the quantity of matter being considered—along with pressure, density, and other comparable properties.
If the temperature is low enough and pressure rises in a closed vessel, A gas can turn into a liquid form.
Thus, typically, this happens when we raise the pressure at room temperature, but there are other situations that aren't covered, including lowering the temperature at room pressure.
To learn more about temperature, refer to the link below:
https://brainly.com/question/11464844
#SPJ2
yield for this reaction?
Reaction: N2(g) + 3 H2(g) → 2 NH3 (g)
Answers
Answer:
Yes, yield.
Explanation:
N2(g) + 3 H2(g) → 2 NH3 (g) balanced equation
First, find limiting reactant:
Moles H2 = 1.83 g x 1 mole/2 g = 0.915 moles H2
Moles N2 = 9.84 g N2 x 1 mole/28 g = 0.351 moles N2
The mole ratio of H2: N2 is 3:1, so H2 is limiting (0.915 is less than 3 x 0.351)
Theoretical yield of NH3 = 0.915 mol H2 x 2 mol NH3/3 mol H2 = 0.61 moles NH3