a.

They are both gases

b.

Their molecules contain carbon

c.

Thy have the same relative atomic mass

d.

Both are denser than air

a.

number of carbon atoms present in the compound

b.

molecular mass of the compound

c.

molecular formula of the compound

d.

number of alkyl groups bonded to the carbon having the hydroxyl group

a.

high melting point

b.

hardness

c.

octahedral shape

d.

durability

a.

carbon(IV) oxide

b.

glucose

c.

hydrogen

d.

sodium citrate