Which is the molar mass of H2O? |
18.02 g/mol |
What is the molar mass of CHCl3? |
119.37 g/mol |
Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride? |
Both are made up of 6.02 x 10^23 formula units. |
Which is the formula mass of (NH4)2SO4? |
132.17 amu |
What is the molar mass of a substance? |
the mass in grams of one mole of a substance |
How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? |
Each sample has the same number of molecules. |
Which value gives the number of particles in 1 mol of a substance? |
6.02 x 10^23 |
What is the molar mass of Al2(SO4)3? |
342.17 g/mol |
How are a mole and a dozen similar? |
Each names a given number of objects. |
Which statement best describes a mole? |
It contains 6.02 x 10^23 particles of a given substance. |
The mole concept will most likely be used in |
determining how many ozone molecules are lost in the atmosphere. |
Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? |
They both have the same number of atoms. |
In a classroom, which comparison would a teacher most likely use for describing a mole? |
a dozen eggs and a dozen jellybeans |
Which is the molar mass of BF3? |
67.81 g/mol |