Advertisements
Advertisements
Question
What is the mass of 0.5 mole of water molecules?
Advertisements
Solution
Mass of one mole of water molecule = 18 g
Then, mass of 0.5 mole of water molecules = 0.5 × 18 g = 9 g
APPEARS IN
RELATED QUESTIONS
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
What is a group of 6.022 × 1023 particles known as ?
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
Define the term:
Relative molecular mass
Calculate the number of gram atoms in 4.6 gram of sodium.
One mole of any gas occupies ______ ml at S.T.P.
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
Fill in the missing data in the Table
| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
