_________ can be prepared  in the laboratory by passing  dry chlorine gas over heated  red phosphorus.

Which  one  of the following  is vital to living  beings?

MgSO₄ .7H₂O   → ____________ +6H₂O

What is the formula for thionyl chloride?

A typical 70kg man contains about ____________ of sodium.

The viscosity of ____________ oils does not  change much with temperature.

What  is the formula  for sulphuryl chloride?

______________ is extensively used as chlorinating agent in  organic chemistry.

__________ regulate the flow of water across cell membrane and in the transport of  sugars and amino acids into cells.

_______________  ions are the most abundant cations within cell fluids.