how many moles are in 5 grams of no2 molecules?
I know the current mentality is not to start sentences with a capital letter BUT no2 doesn't tell me a thing. NO2 does.
moles = grams/molar mass.
230.025
To find out how many moles are in 5 grams of NO2 molecules, we need to use the formula:
moles = mass / molar mass
First, we need to determine the molar mass of NO2. This can be calculated by adding up the atomic masses of nitrogen (N) and oxygen (O).
The atomic mass of nitrogen (N) is approximately 14.01 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol. Since NO2 consists of one nitrogen atom and two oxygen atoms, we can calculate the molar mass as follows:
Molar mass of NO2 = (atomic mass of N × number of N atoms) + (atomic mass of O × number of O atoms)
= (14.01 g/mol × 1) + (16.00 g/mol × 2)
= 14.01 g/mol + 32.00 g/mol
= 46.01 g/mol
Now we have the molar mass of NO2, so we can calculate the number of moles using the formula above:
moles = mass / molar mass
= 5 g / 46.01 g/mol
≈ 0.1087 mol (rounded to four decimal places)
Therefore, there are approximately 0.1087 moles of NO2 molecules in 5 grams.