Advertisements
Advertisements
Question
Which of the following correctly represents 360 g of water ?
- 2 moles of H2O
- 20 moles of water
- 6.022 × 1023 molecules of water
- 1.2044 × 1025 molecules of water
Options
(i)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
Advertisements
Solution
(ii) and (iv)
20 moles of water and 1.2044×1025 molecules of water correctly represent 360 gms of water.
RELATED QUESTIONS
Convert into mole.
20 g of water
Deduce the number of molecules of the following compound in the given quantity.
32g oxygen
Define the term Relative atomic mass.
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
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 or explain the term:
Relative atomic mass
Calculate the number of molecules in one Kg of calcium chloride.
Calculate the number of moles in 7g of nitrogen.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
