2. Atoms & Elements

How many moles of silver (Ag) are equivalent to 68.3 g Ag?

How many moles of silver (Ag) are present in a sample of 3.8 × 10²⁴ atoms Ag?

In 1.75 mol of methane, CH₄, there are ______ molecules of methane.

How many moles of sodium (Na) do you have in a sample of 9.8 × 10²³ atoms Na?

What is the mass of one mole of beryllium if the atomic mass of beryllium is 9.01?

The molar mass of sodium is 22.99 g/mol and the molar mass of chlorine is 35.45 g/mol.

How many atoms of nitrogen are in the chemical formula Ni(NO₃)₂? 2 1 6 3

128.3 grams of methane (CH₄) is equal to how many moles of methane?

How many moles of iron are present in 3.15 × 10²⁴ atoms of iron?

The number of moles of hydrogen that is needed to produce 0.253 mol of water is

How many moles of carbon dioxide are there in 52.06 g of carbon dioxide?

How many oxygen atoms are contained in 2.74 g of Al₂(SO₄)₃?

Write a conversion factor for the relationship between grams and a mole of fe.

How many moles of pyridine (C₅H₅N) are contained in 3.13 g of pyridine?

There are __________ sulfur atoms in 25 molecules of C₄H₄S₂.