how many moles are in 2.5 g of n₂?\n0.089 moles\n0.18 moles\n1.3 moles\n11 moles
how many moles are in 2.5 g of n₂?\n0.089 moles\n0.18 moles\n1.3 moles\n11 moles
Answer
Explanation:
Step1: Determine molar mass of N₂
The molar mass of N is 14.0 g/mol. For N₂, molar mass $M = 2\times14.0\ g/mol= 28.0\ g/mol$.
Step2: Use mole - mass formula
The formula to calculate the number of moles $n$ is $n=\frac{m}{M}$, where $m$ is the mass and $M$ is the molar mass. Given $m = 2.5\ g$ and $M=28.0\ g/mol$, then $n=\frac{2.5\ g}{28.0\ g/mol}\approx0.089\ mol$.
Answer:
0.089 moles