Number of moles of sugar in 547.2 gram are:

(Mol. mass of sugar = 342)

The number of moles of iodine in a sample containing 1.0 × 10²² molecules are:

The mass of 100 molecules of sucrose (C₁₂H₂₂O₁₁) is_________.

Number of atoms in 52 g of He are:

The weight of carbon monoxide having same number of oxygen atoms as are present in 88 g of carbon dioxide are:

The mass percentage of iron in copper pyrites (CuFeS₂) is:

How many moles of methane are required to produce 22g of CO₂(g) after combustion ?

2.46 g of sodium hydroxide (molar mass = 40) is dissolved in water and the solution is made to 100 cm³ in a volumetric flask. The molarity of the solution is:

The molality of a solution containing 20.7 g of potassium carbonate dissolved in 500 mL of solution:

_{(assume density of solution =1 g mL}^–1_).

How many grams of Na₂CO₃ should be dissolved to make 100 cm³ of 0.15 M Na₂CO₃ solution?

The concentration of sugar (C₁₂H₂₂O₁₁) in mol L^–1 if its 20 g are dissolved in enough water to make a volume up to 2 L is:

A solution is 25% water, 25% ethanol and 50% acetic acid by mass. The mole fraction of water is:

250 mL of 1.5 M solution of sulphuric acid is diluted by adding 5L of water. The molarity of the diluted solution is:

How many moles are 98.3 grams of aluminum hydroxide, Al(OH)₃? (Atomic mass of Al = 27, H= 1, O = 16)

How many Mg atoms are present in 3.00 moles of MgCl2 ?

What is the mass of 6.02 x 10²³ platinum atoms? Round to the nearest hundredths place.