Doubtify : One-Stop Solution for all Your Doubts

Pinned Post

❓ Question A 15% (w/w) H₂SO₄ solution has a density of 1.020 g cm⁻³ . Find: Molarity (M) Molality (m) (Given: Molar mass of H₂SO₄ = 98 …

❓ Question Magnesium reacts with sulphur to form magnesium sulphide. Mg + S → MgS \boxed{\text{Mg} + \text{S} \rightarrow \text{MgS}} Given: Ato…

❓ Question 100 mL of PH₃ gas decomposes to give P₄ and H₂. Find the change in volume. Reaction: 4 P H 3 ( g ) → P 4 ( s ) + 6 H 2 ( g ) 4PH_3(g)…

❓ Question The molarity of a 70% (m/m) aqueous solution of a monobasic acid (X) is: Given: Density of solution = 1.25 g mL⁻¹ Molar mass o…

❓ Question Concentrated nitric acid is labeled as 75% by mass . The volume (in mL) of the solution containing 30 g of H N O 3 HNO_3 is: Given:…

❓ Question Concentrated nitric acid is labeled as 75% by mass . Find the volume (in mL) of the solution that contains 30 g of H N O 3 HNO_3 . Gi…

❓ Question Quantitative analysis of an organic compound X X gives the following composition: Carbon = 14.5% Chlorine = 64.46% Hydrogen =…

❓ Question A sample of C O 2 CO_2 has mass x x mg. After removing 10 21 10^{21} molecules from it, 2.8 × 10 − 3 2.8\times10^{-3} of C O 2 CO_2…

❓ Question 0.01 mole of an organic compound X X containing 10% hydrogen by mass on complete combustion produces 0.9 g of H 2 O H_2O . Find the …

❓ Question When 81 g of aluminium is allowed to react with 128 g of oxygen gas , find the mass of aluminium oxide ( A l 2 O 3 ) (Al_2O_3) ( A l 2…