How many moles are in 300.1 g of ammonia, NH3? Be sure to show ALL work below!! (Hint: This question will require you to change
grams to moles using molar mass, but you also need to calculate molar mass of the compound)
1 answer:
Answer: 17.62 g/mol
Explanation:
Data:
m = 300.1 g
compound: NH3 (the number 3 is a subscript)
n = ?
Formula:
n = mass in grams / molar mass
Solution:
1) Calculate the molar mass
N: 14.007 g/mol
H: 3*1.008 g/mol
-------------------
14.007g/mol + 3*1.008g/mol = 17.031 g/mol
2) Calculate the number of moles
n = mass in grams / molar mass = 300.1 g / 17.031 g/mol = 17.62 mol
Answer: 17.62 mol
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