## Question

### Solution

Correct option is

0.6 g

∴1000 cm3 of 0.15 M NaOH contain NaOH = 0.15 mole

∴ 100cm3 of 0.15 M NaOH contain NaOH = (Molar mass NaOH = 40 g mol–1)

#### SIMILAR QUESTIONS

Q1

How many inches are there in 3.00 km? Given that 1 km = 1000 m, m = 1.094 yd, 1 yd = 36 in.

Q2

What is the mass (in grams) of an aluminum block whose dimensions are .and whose density is 2.7 g/cm3? Given that 1 in. = 2.54 cm.

Q3

The mass of precious stones is expressed in terms of ‘carat’. Given that 1 caret = 3.168 grains and 1 grams = 15.4 grains, calculate the total mass of a ring in grams and kilograms which contains 0.500 carat diamond and 7.00 grams gold.

Q4

4.90 g of KClO3 when heated produced 1.92 g of oxygen and the residue (KCl) left behind weight 2.96 g. Show that these results illustrate the law of conservation of mass.

Q5

Chlorine has two isotopes of atomic mass units 34.97 and 36.97. The relative abundances of these two isotopes are 0.755 and 0.245 respectively. Find the average atomic mass of chlorine.

Q6

Calculate the molecular mass of glucose (C6H12O6)molecule.

Q7

A solution is prepared by adding 2 g of a substance A to 18 g of water. Calculate the mass percent of the solute.

Q8

The density of 3 M solution of NaCl is 1.25 g mL–1. Calculate the molalityof the solution.

Q9

Calculate the number of oxalic acid molecules in 100mL of 0.02 N oxalic acid solution

Q10

Calculate the molarity of water if its density is 100 kg/m3