Molecular Weight

Q.

What is the relative molecular mass of cane sugar?

1. 342

2. 345

3. 350

4. 240

Q.

What is the molecular mass of $CC{l}_4$?
Given the atomic mass of $C=12u$ and $Cl=35.5u$

1. 150.5 u

2. 342.5 u

3. 154 u

4. 160 u

Q. Total mass of ___ = Total mass of products

Q.

The molar mass of water is _____ g/mol

1. 74 g/mol

2. 57 g/mol

3. 74 kg/mol

4. 57 kg/mol

Q.

$Mass\%$ of oxygen in Glucose is _____

1. $53.33\%$
2. $55\%$
3. $66.33\%$
4. $77.88\%$

Q.

What is the mass ratio of hydrogen to oxygen in a water molecule?

1. 1:8

2. 2:3

3. 1:16

4. 1:4

Q.

The molecular mass of Na₂CO₃ is ___.

Q.

Which of the following would weigh the most if the equal number of moles taken?

1. $\text{sucrose}\left(C_{12}{H}_{22}{O}_{11}\right)$

2. $N{O}_2$

3. $CaC{O}_3$

4. $H_{2}O$

Q.

Ratio of number of atoms in one mole of oxygen molecule to ozone is _____.

1. 

2. 

3. 

4. 

Q.

The molecular formula of a compound is $C_2{X}_6$ . X is unknown.If the mass ratio of C to X is 4:1. Find X

1. Sodium

2. Calcium

3. Helium

4. Hydrogen