Top answers


Nitrogen reacts with hydrogen to produce ammonia. Calculate the mass of ammonia made from 84.0g of nitrogen.

(1) First, write out the equation if it is not given: N 2 + 3H 2 ---> 2NH 3 (2) Calculate the moles of nitrogen in the reaction using the information you have; in this case it is mass and relative formula...
TT
Answered by Thivya T. Chemistry tutor
15050 Views

Magnesium chloride is an ionic compound and has a high melting point. Explain why magnesium chloride has a high melting point?

Magnesium atoms lose two electrons from its outer shell, thus form positvely charged ions with a charge of 2+. These 2 electrons are transferred to and gained by a diatomic molecule of chlorine atoms - each ...
HS
Answered by Heaja S. Chemistry tutor
40044 Views

Describe the bonding and structure in solid sodium chloride

It is a giant lattice structure. Sodium ions (Na+) are positively charged and chloride ions (Cl-) are negatively charged. There is ionic bonding between - strong electrosatic forces of attraction between opp...
AK
Answered by Arushan K. Chemistry tutor
8053 Views

What is cracking and how is it done?

Cracking of CRUDE OIL is the breakdown of long-chain hydrocarbons (produced from fractional distillation) to shorter-chain hydrocarbons, which are more economically useful. Long chain hydrocarbons are vapour...
MK
Answered by Maciek K. Chemistry tutor
3848 Views

Why are the properties of diamond and graphite different despite both being made of the same constituent element, carbon.

Steps to address questions Structure Bonds Free electrons Diamond is very hard and is a poor conductor of electricity as each carbon atom is strongly bonded to 4 other carbon elements by strong covalent bond...
TF
Answered by Tania F. Chemistry tutor
3083 Views