Answer:
6.)
7.) 134.4 g O₂
Explanation:
The unbalanced equation:
NH₃ (g) + O₂ (g) ---> N₂ (g) + H₂O (g) + energy
<u>Reactants</u>: 1 nitrogen, 3 hydrogen, 2 oxygen
<u>Products</u>: 2 nitrogen, 2 hydrogen, 1 oxygen
The balanced equation:
4 NH₃ (g) + 3 O₂ (g) ---> 2 N₂ (g) + 6 H₂O (g) + energy
<u>Reactants</u>: 4 nitrogen, 12 hydrogen, 6 oxygen
<u>Products</u>: 4 nitrogen, 12 hydrogen, 6 oxygen
To convert from moles to grams, you need to multiply the starting value (4.2 moles) by the molar mass (32.00 g/mol). The molar mass can serve as a conversion because it technically means there are 32.00 grams O₂ per every 1 mole. It is important to arrange this ratio in a way that allows for the cancellation of units (the desired unit should be in the numerator).
4.2 moles O₂ 32.00 g
-------------------- x ---------------- = 134.4 g O₂
1 mole
Answer:
0.0156 atm
Explanation:
Let the partial pressure of water vapor be
.
Given:
Total pressure of air sample is, 
Partial pressure of nitrogen is, 
Partial pressure of oxygen is, 
Partial pressure of all other gases is, 
From Dalton's law of partial pressure, we know that, the total pressure of a mixture of gases is equal to sum of partial pressure of each individual gas.
So, total pressure of air sample is equal to the sum of partial pressure of nitrogen, oxygen, other gases and water vapor.
Therefore, framing in equation form, we have:

Plug in the given values and solve for
. This gives,

Therefore, the partial pressure of water vapor in an air sample is 0.0156 atm.
Answer:
I believe it is B. molar mass...
Explanation:
Hope this is right!
Answer:
<em>Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed is related to wavelength and wave frequency by the equation: Speed = Wavelength x Frequency. This equation can be used to calculate wave speed when wavelength and frequency are known</em>
Answer:
8:10
Explanation:
The coefficients of a balanced chemical equation give us the mole ratios. The coefficient of carbon dioxide here is 8 and water is 10.