How many moles in 32g of oxygen gas?

Answer 1

The number of grams in a mole of a molecule is found by looking at the Atomic Mass of each element on the Periodic Table. The molar mass of an element is it's atomic mass in grams. The atomic mass of oxygen is 15.999. Since there are two atoms of oxygen in a molecule of oxygen, the molar mass of oxgen (O2) is 15.999 x 2. That comes out to 31.998g/mol, or you can round to 32 if significant figures arn't important to you.

Answer 2

To determine the number of moles in 32g of oxygen gas (O2), first find the molar mass of O2, which is 32 g/mol. Then, divide the given mass by the molar mass to get the number of moles. In this case, 32g / 32g/mol = 1 mole of oxygen gas.

Answer 3

A mole is the measument of a single, in this case oxygen molecule. Oxygen on the periodic table is shown like this 8 O 16.00 The 16 is showing the atomic mass. So to answer the question above the answer is ... There are 1,600 moles in 100 grams of oxygen

Answer 4

Oxygen at standard temperature and pressure exists as diatomic molecules. Therefore, the gram molecular mass of oxygen gas is twice the atomic mass of oxygen, or about 32 grams. Therefore, 32 g of oxygen gas constitutes 1.0 moles of oxygen, to the justified number of significant digits.

Answer 5

For this you need the atomic (molecular) mass of O2. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.

2.00 moles O2 × (32.0 grams) = 64.0 grams O2

Answer 6

100 grams O2 (1mol O2/32g)(6.022 X 10^23/1mol O2 ) = 1.88 X 10^24 molecules

Answer 7

32 in O2 and 16 in O

Answer 8

6.25

Answer 9

0.03125