1 A mixture of NH4NO3 and NH4 2HPO4 contain 30 40 mass per cent of nitrogen What is the mass ratio of the two components in the

Question

1 A mixture of NH4NO3 and NH4 2HPO4 contain 30 40 mass per cent of nitrogen What is the mass ratio of the two components in the mixture 1 2 1 2 1 2 3 3 4 4 4 1 2 A metal M forms the sulphate M SO4 3 A 0 596 gram sample of the sulphate reacts with excess BaCl to give 1 220 g BaSO4 What is the atomic weight of M Atomic weights S 32 Ba 137 3 1 26 9 2 69 7 3 55 8 4 23 3 SO Cl sulphuryl chloride reacts with water to given a mixture of H SO4 and HCl What volume of 0 2 M Ba OH is needed to completely neutralize 25 mL of 0 2 M SO Cl solution 1 25 mL 2 50 mL 3 100 mL 4 200 mL 100 cm of a solution of an acid Molar mass 98 containing 29 4 g of the acid per litre were completely neutralized by 90 0 cm of aq NaOH containing 20 g of NaOH per 500 cm The basicity of the acid is 1 3 2 2 3 1 4 data insufficient 5 A gaseous compound is composed of 85 7 by mass carbon and 14 3 by mass hydrogen It s density is 2 28 g litre at 300 K and 1 0 atm pressure Determine the molecular formula of the compound 1 C H 2 C H4 3 C4H8 4 C4H10 6 When 22 4L of H g is mixed with 11 2L of Cl g each at STP the moles of HCl g formed is equal to a 1 mole of HCl g b 2 moles of HCl g c 0 5 mole of HCl g d 1 5 moles of HCl g 7 1 c c of N 0 at NTP contains 1 10 2 atoms 6 02 x 1023 molecules 22400 3 10 electrons 4 All the above 8 What is the number of moles of O atom in 126 amu of HNO3 1 2 2 3 6 6 The number of gram molecules of oxygen in 6 02 102 4 CO molecules is 1 10 gm molecules 2 5 gm molecules 3 1 gm molecules 4 0 5 gm molecules 10 The haemoglobin from the red blood corpuscles of most mammals contains approximately 0 33 of

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