Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- A metal chloride contains 55.0% of chlorine by weight. 100 mL vapours of the metal chloride at STP weigh 0.57 g. The molecular...
- The mass of NH_3 produced when 131.8 kg of cyclohexane carbaldehyde undergoes Tollen's test is _____kg. (Nearest Integer) Molar...
- 1g of a carbonate (M_2CO_3) on treatment with excess HCl produces 0.01 mol of CO_2. The molar mass of M_2CO_3 is _______g mol^ -1...
- The volume (in mL) of 0.1 M AgNO_3 required for complete precipitation of chloride ions present in 20 mL of 0.01 M solution of...
- Uracil is a base present in RNA with the following structure. % of N in uracil is ________. Given : Molar mass N = 14 g mol^ -1 ,...
- 5 g of NaOH was dissolved in deionized water to prepare 450 mL stock solution. What volume (in mL) of this solution would be...
- Number of moles of AgCl formed in the following reaction is_______
- Number of hydrogen atoms per molecule of a hydrocarbon A having 85.8% carbon is _________ (Given: Molar mass of A = 84 g mol^ -1 )
- The density of a monobasic strong acid (Molar mass 24.2 g/mol) is 1.21 kg/L. The volume of its solution required for the complete...
- When 0.01 mol of an organic compound containing 60% carbon was burnt completely, 4.4 g of CO_2 was produced. The molar mass of...
- The volume of HCl, containing 73 g L^ -1 , required to completely neutralise NaOH obtained by reacting 0.69 g of metallic sodium...
- A 300 mL bottle of soft drink has 0.2 M CO_2 dissolved in it. Assuming CO_2 behaves as an ideal gas, the volume of the dissolved...
- Some amount of dichloromethane (CH_2Cl_2) is added to 671.141 mL of chloroform (CHCl_3) to prepare 2.6 10^ -3 M solution of...
- Assume carbon burns according to following equation : 2C_ (s) +O_ 2(g) 2CO(g) When 12 g carbon is burnt in 48 g of oxygen, the...
- Given that the abundances of isotopes ⁵⁴Fe, ⁵⁶Fe and ⁵⁷Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is
- Number of atoms in 558.5 gram Fe (at.wt. of Fe = 55.85 g mol^ -1 ) is
- 6.02 10^ 20 molecules of urea are present in 100ml of its solution. The concentration of urea solution is
- If we consider that 16, in place of 1 12 ; mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole...
- How many moles of magnesium phosphate, Mg_3(PO_4)_2 will contain 0.25 mole of oxygen atoms?
- The density (in g mL^ -1 ) of a 3.60 M sulphuric acid solution that is 29% H_2SO_4 (Molar mass = 98 g mol^ -1 ) by mass will be
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