Mole fraction of the solute in a 1.00 molal aqueous solution is
1. 0.0177
2. 0.0344
3. 1.7700
4. 0.1770
Difficulty Level:
6.02x1020 molecules of urea are present in 100mL of its solution. The concentration of solution is
1. 0.02M
2. 0.01M
3. 0.001M
4. 0.1M
Difficulty Level:
Difficulty Level:
The number of moles of oxygen in 1L of air containing 21% oxygen by volume, under standard conditions, is
1. 0.0093 mole
2. 2.10 moles
3. 0.186 mole
4. 0.21 mole
Difficulty Level:
Percentage of Se in peroxidase anhydrase enzyme is 0.5% by weight (at. weight = 78.4), then minimum molecular weight of peroxidase anhydrase enzyme is
1. 1.568 x 103
2. 15.68
3. 2.168 x 104
4. 1.568 x 104
Difficulty Level: