0.75 moles of NH3 molecules contain how many moles of hydrogen?

In summary, the formula for calculating the number of moles of hydrogen in a given number of moles of NH3 molecules is (0.75 moles of NH3) x (3 moles of H / 1 mole of NH3) = 2.25 moles of H. There are also 2.25 moles of hydrogen atoms in 0.75 moles of NH3 molecules, and the molar mass of NH3 is 17.03 g/mol. Additionally, there are 4.5 x 10^23 molecules in 0.75 moles of NH3, and the number of moles of hydrogen and nitrogen in 0.75 moles of NH3 molecules are equal
  • #1
LaNell
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Homework Statement




0.75 moles of NH3 molecules contain how many moles of hydrogen?

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The Attempt at a Solution

 
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  • #2


You can use ratios, so in NH3 you have:

number of Nitrogen atoms : number of Hydrogen atoms = n(N) : n(H) = 1 : 3

Therefore, for each mole of Nitrogen atoms you have 3 moles of Hydrogen atoms

As such, when you have 0.75 mol of NH3 molecules this means there is 0.75 mol of Nitrogen atoms (ie: n(N) = 0.75), and therefore the n(H) = 3 * 0.75 = 2.25mol.
 

What is the formula for calculating the number of moles of hydrogen in 0.75 moles of NH3 molecules?

The formula for calculating the number of moles of hydrogen in a given number of moles of NH3 molecules is:
(0.75 moles of NH3) x (3 moles of H / 1 mole of NH3) = 2.25 moles of H

How many hydrogen atoms are in 0.75 moles of NH3 molecules?

There are 2.25 moles of hydrogen atoms in 0.75 moles of NH3 molecules. This is because each molecule of NH3 contains three hydrogen atoms, so we can multiply the number of moles of NH3 by 3 to get the total number of moles of hydrogen atoms.

What is the molar mass of NH3?

The molar mass of NH3 is 17.03 g/mol. This means that for every mole of NH3, there are 17.03 grams of the compound.

How many molecules are in 0.75 moles of NH3?

There are 4.5 x 10^23 molecules in 0.75 moles of NH3. This is because one mole of any substance contains Avogadro's number (6.022 x 10^23) of particles, in this case, molecules.

How does the number of moles of hydrogen in 0.75 moles of NH3 molecules compare to the number of moles of nitrogen in the same number of molecules?

There are 0.75 moles of hydrogen and 0.75 moles of nitrogen in 0.75 moles of NH3 molecules. This is because for every mole of NH3, there is one mole of nitrogen and three moles of hydrogen. Therefore, the number of moles of each element is equal.

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