List of top Chemistry Questions on Stoichiometry and Stoichiometric Calculations

0.48 g of an organic compound on complete combustion produced 0.22 g of CO2 . The percentage of C in the given organic compound is :
Number of water molecules in one drop of water, if $1$ ml of water has $20$ drops and $A$ is Avogadro number, is
Calcium carbonate reacts with aqueous \(HCl\) to give \(CaCl_2 \) and \(CO_2\) according to the reaction, \(CaCO_3 (s) + 2 HCl (aq) → CaCl_2 (aq) + CO_2(g) + H_2O(l)\). What mass of \(CaCO_3\) is required to react completely with \(25 \ mL\) of \(0.75 \ M\) \(HCl\)?
In the reaction:BCl3+PH3⇌Cl3B·PH3 Lewis base is:
20.0 kg of H\(_2\)(g) and 30 kg of H\(_2\)(g) are reacted to produce NH3(g). The amount of NH3(g). formed is
The mass of 112 $cm^3$ of $CH_4$ gas at STP is
Chlorine is prepared in the laboratory by treating manganese dioxide \((MnO_2)\) with aqueous hydrochloric acid according to the reaction
\(4 HCl (aq) + MnO_2(s) → 2H_2O (l) + MnCl_2(aq) + Cl_2 (g)\).
How many grams of HCl react with 5.0 g of manganese dioxide?
Find the mass (in g) of O2 required for the combustion of 900 g of glucose.
Calculate the amount of carbon dioxide that could be produced when 
(i) 1 mole of carbon is burnt in air. 
(ii) 1 mole of carbon is burnt in 16 g of dioxygen. 
(iii) 2 moles of carbon are burnt in 16 g of dioxygen.
If 10 volumes of dihydrogen gas reacts with five volumes of dioxygen gas, how many volumes of water vapour would be produced?
If the density of methanol is \(0.793\, \text{kg L}^{–1}\), what is its volume needed for making 2.5 L of its 0.25 M solution?
How much copper can be obtained from 100 g of copper sulphate \((\text{CuSO}_4)\)?
The volume of 1.0 g of hydrogen in litres at N.T.P.is
The number of atoms present in 0.1 mole of $P_4$(at. mass = 31) are
The modern atomic weight scale is based on
The mass of 70% $H_2SO_4$ by mass required for neutralisation of 1 mol of NaOH is
The mass of 11.2 L of ammonia gas at S.T.P. is
The charge on $1$ gram ions of $Al^{3+}$ is
Match the following:
List-I List-n (At STP)
(A) $10 \, g \, CaCO_3 \xrightarrow [\text{decomposition}]{\Delta}$ (i) $0.224 \, L \, CO_2$
(B) $1.06 \, g \, Na_2 CO_3 \xrightarrow{\text{Excess HCl}}$ (ii) $4.48 \, L \, CO_2$
(C) $2.4 \, g \, C \xrightarrow [\text{combustion}]{Excess \, O_2}$ (iii) $0.448 \, L \, CO_2$
(D) $0.56 \, g \, CO \xrightarrow [\text{combustion}]{\text{Excess} O_2}$ (iv) $2.24 \, L \, CO_2$
(v) $22.4 \, L \, CO_2$
The correct match is