What is the density of N2O, a gas, at STP?
How many moles are in 16 grams of O2?
density = mass/volume
1 mol of a gas occupies 22.4 L at STP.
density = molar mass/molar volume = ??
#2. 1 mol O2 has a mass of 32 grams?
grams = mols/molar mass = ??
co2
To find the density of N2O at STP (Standard Temperature and Pressure), we can use the formula for density, which is mass divided by volume. However, we need to know the molar mass and molar volume of N2O at STP.
The molar volume of any gas at STP is equal to 22.4 liters. Therefore, 1 mole of N2O occupies a volume of 22.4 liters at STP.
The molar mass of N2O can be calculated by summing the atomic masses of its constituent atoms. Nitrogen (N) has an atomic mass of approximately 14.01 grams/mol, while oxygen (O) has an atomic mass of approximately 16.00 grams/mol. Multiplying the atomic masses by the number of atoms present in N2O gives us a total molar mass of approximately 44.01 grams/mol.
To calculate the density of N2O at STP, we divide the molar mass by the molar volume:
Density = Molar mass / Molar volume
Density = 44.01 grams/mol / 22.4 liters/mol
The units cancel out, leaving us with a density of approximately 1.96 grams per liter.
Now, let's move on to the second question.
To find the number of moles in 16 grams of O2, we need to use the formula:
Moles = Mass / Molar mass
The molar mass of O2 can be calculated by adding the atomic masses of two oxygen atoms, which is approximately 16.00 grams/mol.
Substituting the given values into the formula:
Moles = 16 grams / 32 grams/mol
The grams unit cancels out, leaving us with the number of moles:
Moles = 0.5 moles
Therefore, there are 0.5 moles in 16 grams of O2.