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For the reaction 2x + 3y + 4z → 5w
Initially if 1 mole of x, 3 mole of y and 4 mole of z is taken. If 1.25 mole of w is obtained then % yield of this reaction is
Molarity of NaOH in a solution prepared by dissolving 4 g of NaOH in enough water to form 250 ml of solution is:
125 ml of 8% w/w NaOH solution (sp. gravity 1) is added to 125 ml of 10% w/v HCl solution. The nature of resultant solution would be ____
Ratio of masses of H_{2}SO_{4} and Al_{2} (SO_{4})_{3} is grams each containing 32 grams of S is _____
18 g of glucose (C_{6}H_{12}O_{6}) is present in 1000 g of an aqueous solution of glucose. The molality of this solution is:
For the reaction 2A + 3B + 5C → 3D
Initially if 2 mole of A, 4 mole of B and 6 mole of C is taken, With 25% yield, moles of D which can be produced are _____________.
Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to give a compound having 75.8% of X. The formula of the compound is:
Equal volumes of 10% (v/v) of HCl is mixed with 10% (v/v) NaOH solution. If density of pure NaOH is 1.5 times that of pure HCl then the resultant solution be :
Similar to the % labelling of oleum, a mixture of H_{3}PO_{4} and P_{4}O_{10} is labelled as (100 + x) % where x is the maximum mass of water which can react with P_{4}O_{10} present in 100 gm mixture of H_{3}PO_{4} and P_{4}O_{10}. If such a mixture is labelled as 127% Mass of P_{4}O_{10} is 100 gm of mixture, is
C_{6}H_{5}OH(g) + O_{2}(g) → CO_{2}(g) + H_{2}O(l)
The magnitude of volume change if 30 ml of C_{6}H_{5}OH (g) is burnt with an excess amount of oxygen, is
How many moles of NaCl should be dissolved in 100 mL of water to get 0.2 M solution?
If 50 gm oleum sample rated as 118% is mixed with 18 gm water, then the correct option is
The minimum mass of mixture of A_{2} and B_{4} required to produce at least 1 kg of each product is:
(Given At. mass of ‘A’ = 10; At mass of ‘B’ = 120) 5A_{2} + 2B_{4} → 2AB_{2} + 4A_{2}B
The % by volume of C_{4}H_{10} in a gaseous mixture of C_{4}H_{10}, CH_{4} and CO is 40. When 200 ml of the mixture is burnt in excess of O_{2}. Find volume (in ml) of CO_{2} produced.
74 gm of sample on complete combustion gives 132 gm CO_{2} and 54 gm of H_{2}O. The molecular formula of the compound may be
Density of a gas relative to air is 1.17. Find the mol. mass of the gas. [M_{air} = 29 g/mol]
Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)_{2} is:
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195 videos337 docs190 tests
