How do you calculate the number of moles in 0.135 grams of #HNO_3#?
In order to calculate the moles in 0.135 grams of
We begin by finding the molar mass of
Now we can use a conversion factor to convert
grams to moles
n = number of moles
m = mass of substance
M = molar mass
0.135 grams (m) of
Now you need to find the molar mass (M). If you look closely at the compound formula, you can see that Hydrogen, Nitrogen and Oxygen are present. The molar mass of: Hydrogen is 1.0 g/mol, Nitrogen is 14.0 g/mol and Oxygen 16.0 g/mol.
Therefore, the molar mass of
Looking back at the
the number of moles (n) present is:
Note: Answer rounded to 3 significant figures.