In a reaction x + y + z₂ \(\longrightarrow \) xyz₂ identify the Limiting reagent if any, in the following reaction mixtures.
i) 200 atoms of x + 200 atoms of y + 50 molecules of z₂
ii) 1 mol of x + 1 mol of y + 3 mol of z₂
iii) 50 atoms of x + 25 atoms of y + 50 molecules of z₂
iv)  2.5 mol of x + 5 mol of y + 5 mol of z₂

Mass of one atom of an element is 6.645 x 10^-23g. How many moles of element are there in 0.320 kg.

What is the difference between molecular mass and molar mass ? Calculate the molecular mass and molar mass for carbon monoxide.

What is the empirical formula of the following?
i) Fructose (C₆ H₁₂ O₆) Found in honey
ii) Caffeine  (C₈ H₁₀ N₄ O₂) a substance found in tea and Coffee 

How many moles of ethane is required to produce 44 g of CO_2(g) after combustion.

Calculate the empirical and molecular formula of a compound containing 76.6% carbon, 6.38 % hydrogen and rest oxygen its vapour density is 47.

Calculate the amount of water produced by the combustion of 32 g of methane.

How many moles of hydrogen is required to produce 10 moles of ammonia ?

How much volume of carbon dioxide is produced when 50 g of calcium carbonate is heated completely under standard conditions ?

How much volume of chlorine is required to form 11.2 L of HCI at 273 K and 1 atm pressure?