Find the mass in 34.4 liters of O2 gas at STP?

mass of 1 mole of 34.4liters, O2, STP = 95.039999g

Explanation:

Write the problem as a mathematical expression.

Find the mass in 34.4liters of O2 gas at  STP

To find the mass of 1 mole of 34.4liters, O2, STP look up the atomic mass of each element and multiply it by the number of atoms contained in each element in the molecule.  

mass of 1 mole of 34.4liters, O2, STP = 2(mass of O) + (mass of S) + (mass of T) + (mass of P)

Fill in the atomic masses from the periodic table.

mass of 1 mole of 34.4liters, O2, STP = 2(16) + (32.06999969) + (0) + (30.96999931)

Simplify the result.

mass of 1 mole of 34.4liters, O2, STP = 95.039999g

hope this helps, good luck :)

also ive got no clue why the spacing looks all funny, sry about that