Top answers

Balance the following equation for the formation of magnesium chloride: Mg + HCl --> MgCl2 + H

Mg + 2 HCl --> MgCl2 + H 2 There are two chlorines in magnesium chloride so you put a two in front of the hydrochloric acid. This means that you need to put a 2 after the hydrogen gas.
HG
Answered by Helen G. • Chemistry tutor
5877 Views

What is Ionic bonding?

Ionic bonding is bonding between a metal and a non-metal . This happens due to a transferal of electrons. For example a metal from group 2 such as Magnesium bonding to a non-metal from group 6 such as oxygen...
BB
Answered by Bobby B. • Chemistry tutor
2919 Views

Mitosis is important in the life of a multi-cellular organism. Explain why and how mitosis works.

Mitosis allows for growth and development of a living organism. The genetic material inside each cell is doubled as the chromosomes are doubled. The chromosomes line up in the centre of the cell and are pull...
HG
Answered by Helen G. • Biology tutor
3811 Views

How can I figure out what percentages to use in word problems?

Always remember that all the information you need to find the answer is in the word problem. It is always helpful to write out essential numbers at the top of your working so that you can better visualise th...
CS
Answered by Charlotte S. • 13 Plus tutor
2332 Views

How do I add fractions?

The most important thing to remember about adding fractions is that the denominators of both fractions must be the same value in order for you to add them together. Where the denominators of each fraction ar...
CS
Answered by Charlotte S. • 11 Plus tutor
3199 Views