List of top Chemistry Questions on Stoichiometry and Stoichiometric Calculations asked in MHT CET

How many molecules of carbon dioxide are formed when 0.6 g carbon is burnt in air?
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \rightarrow 2 \, \text{H}_2\text{O} \), how many moles of water are produced when 4 moles of hydrogen react with excess oxygen?
How many grams of sodium chloride (NaCl) are produced when 2.0 moles of sodium (Na) react with excess chlorine gas (Cl\(_2\)? The balanced chemical equation for the reaction is: \[ 2 \, \text{Na} (s) + \text{Cl}_2 (g) \rightarrow 2 \, \text{NaCl} (s) \]
What is the number of moles of oxygen atoms in 4.0 g of \( \text{O}_2 \)?
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?
What is the mass of sodium chloride (\( \text{NaCl} \)) formed when 0.5 moles of sodium (\( \text{Na} \)) reacts with excess chlorine (\( \text{Cl}_2 \))?
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \to 2 \, \text{H}_2\text{O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?
What is the mass of 0.5 moles of water (H$_2$O)?
In the reaction \( 2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O} \), if 4 moles of hydrogen react with excess oxygen, how many moles of water are produced?

In the reaction 2Al(s) + 3Cl2(g) → 2AlCl3(s), if 4.0 g of aluminum reacts with 6.0 g of chlorine gas, what is the limiting reactant?

For the reaction N2(g) + 3H2(g) → 2NH3(g), the equilibrium constant Kc at a certain temperature is 1.5. If the concentration of N2 is 0.5 M, H2 is 1.0 M, and NH3 is 0.2 M, what is the reaction quotient Qc?

In the reaction \( \mathrm{2H_2 + O_2 \rightarrow 2H_2O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?
What volume of oxygen gas at STP is required to completely burn 12 g of methane (\( \text{CH}_4 \))? (Molar mass of \( \text{CH}_4 = 16 \, \text{g/mol} \), 1 mole of gas at STP occupies \( 22.4 \, \text{L} \)).

Time required for completion of 90% of a first order reaction is ‘t’. What is the time required for completion of 99.9%of the reaction? 

The molarity of urea (molar mass $\ce{60 \, g \, mol^{-1}}$) solution by dissolving 15 g of urea in 500 $cm^3$ of water is
What is the limiting reagent in the reaction: \( 2H_2 + O_2 \rightarrow 2H_2O \), if 3 moles of \( H_2 \) and 2 moles of \( O_2 \) are reacted together?