What is the total number of electrons present in bonding and antibonding orbitals respectively in $\text{F}_2$ molecule according to MO theory ?

At constant temperature, a gas occupies a volume of 200 mL at a pressure of 500 mm Hg. What will be its volume at 800 mm Hg pressure?

Which of the following statements is not correct ?

The heat of combustion of carbon to $\text{CO}_2$ is $-393.5\ \text{kJ/mol}$. The heat released upon formation of 35.2 g of $\text{CO}_2$ from carbon and oxygen gas is