Arjun purchased 250 g of glucose `(C_6 H_12 O_6)` for Rs. 40. Find the cost of glucose per mole.

Find the osmotic pressure of 5 per cent solution of glucose (C_6H_(12)O_6) at 27^@C . (R = 0.082 litre atmosphere per degree per mole).

Two electric bulbs rated 60 w and 40 w respectively. are used 5 hours per day for 20 days . If the cost of a unit is Rs 4.00 find the cost of the energy used.

The cost of 4 dozen pencils, 3 dozen pens and 2 dozen erasers is Rs 60. The cost of 2 dozen pencils, 4 dozen pens and 6 dozen erasers is Rs 90, whereas the cost of 6 dozen pencils, 2 dozen pens and 3 dozen erasers is Rs. 70. Find the cost of each item per dozen by using matrices.

The heat evolved in the combustion of glucose (C_6H_(12)O_6) is given by the equation C_6H_(12)O_(6(s)) rarr 6CO_(2(g))+6H_2O_((i)) , DeltaH=-680 kcal The weight of CO_(2(g)) produced when 170 kcal of heat is evolved in the combustion of glucose is.

The cost of 4 pencils, 3 pens and 2 books is Rs.150. The cost of 1 pencil, 2 pens and 3 books is Rs.125.The cost of 6 pencils , 2 pens and 3 books is Rs. 175. Find the cost of each item by using matrices.

Solve the following examples: An electric bulb of 40 W is used for 25 days at 10 hours per day. Find the units of energy consumed by the bulb and the cost of using electricity at the rate Rs. 2 per unit.

A sugar syrup of weight 214.2 g contains 34.2 g of sugar (C_(12) H_(22) O_(11)) . Calculate a. the molal concentration. b. the mole fraction of the sugar in the syrup.