450 mg of glucose is dissolved in 100 g of solvent. What is the molality of solution?
0.0025 m
0.025 m
0.25 m
2.5 m
2.5 cm3 of 0.2 M H2SO4 solution is diluted to 0.5 dm3. Find normality of the diluted solution?
0.2 N
0.02 N
0.002 N
0.04 N
The molar concentration of chloride ions in the resulting solution of 300 mL of 3.0 M NaCl and 200 mL of 4.0 M BaCl2 will be
1.7 M
1.8 M
5.0 M
3.5 M
C.
5.0 M
The molal concentration of chloride ions will be 5.0 M.
Molar concentration of Cl- =
=
=
= 5.0 M
The volume of oxygen evolved at STP by decomposition of 0.68 g '20 volume' hydrogen peroxide solution is
2.24mL
22.4mL
224mL
2240mL
What is the molality of a solution containing 200 mg of urea (molar mass 60 g mol-1) dissolved in 40 g of water?
0.0825
0.825
0.498
0.0013
What is the mass of one molecule of yellow phosphorus? (Atomic mass, P = 30)
1.993 × 10-22 kg
1.993 × 10-19 mg
4.983 × 10-20 kg
4.983 × 10-23 mg
What is the volume of water consumed during acid hydrolysis of 1.368 kg of sucrose?
(Given : molar masses of sucrose = 342, water = 18, density of water = 1g/cm3)
0.072 dm3
0.070 dm3
0.18 dm3
0.018 dm3