Gram Atomic Mass

Q.

What is the weight of 22.4 litres of Ammonia gas at STP?

1. 34 g

2. 10 g

3. 20 g

4. 17 g

Q.

One atomic mass unit is exactly equal to __________ of the mass of one atom of C-12.

1. one-fourteenth
2. one-twelfth
3. one-tenth
4. one-eighth

Q.

The GAM of hydrogen is 1 g. How many grams of hydrogen gas contains avogadro number of molecules?

1. 1 g

2. 2 g

3. 3 g

4. 4 g

Q. Number of moles of any chemical substance is given by the ratio of given mass to _____.

1. Avagadro's number
2. atomic mass
3. molar mass
4. atomic number

Q. Calculate the molar mass of Calcium Hydroxide.

1. 65 g/mol
2. 84 g/mol
3. 74 g/mol
4. 100 g/mol

Q. How much amount of $N{H}_3$ is produced when 28 g of nitrogen react with 6 g of hydrogen?

1. 34

Q. 1 mole of a substance consists of a number of particles equal to ____.

1. avogadro's number
2. molecule number
3. mole number
4. formulae number

Q. How many moles of sodium atoms are present in 69 grams of sodium (Na)?

1. 1
2. 2
3. 3
4. 4

Q. What is the mass of one atom of neon if its gram atomic mass is 20 grams?

1. $2.65\times {10}^{-23}$ grams
2. $3.32\times {10}^{-23}$ grams
3. $5.32\times {10}^{-23}$ grams
4. $4.32\times {10}^{-23}$ grams

Q.

Which of the following statements is/are correct for 80 g of oxygen?

1. The atomic mass of oxygen is 16 u.

2. The molecular mass of oxygen is 32 u.

3. The number of gram atoms is 5.

4. The number of gram molecules is 10.