How many bonding pair are present in carbon(iv)oxide? 

2-methylprop-1-ene is a structural isomer of?

Alkanes are used mainly?

What volume of (dm\(^3\)) of water will be added to 10dm\(^3\) of 2.0 mol/dm\(^3\) HCL acid solution to give a final solution of 0.5 mol/dm\(^3\)?

The above table shows the compositions of the atmosphere of planet X. Which of these gases are present in higher percentages on earth?