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Magnesium oxide contains magnesium ions (Mg2+) and oxide ions (O2–). Describe what happens when magnesium atoms react with oxygen atoms to produce magnesium oxide.

magnesium ions loses two electrons becoming Mgoxygen gains two electron becoming OThis now means both the atoms have a full shell

Answered by Rabia D. • Chemistry tutor

9560 Views

Describe how the hormones FSH, oestrogen and LH are involved in the control of the menstrual cycle

FSH stimulates oestrogen productionoestrogen inhibits FSH and stimulates LH /LH stimulates egg release

Answered by Rabia D. • Biology tutor

4082 Views

Le centre de la France est l’endroit idéal pour passer vos vacances en famille. Vous y découvrirez de beaux villages qui se trouvent au milieu de champs verts. La région a toujours offert aux visiteurs un accueil chaleureux dont nos habitants sont fiers.

The above question is a translation that students have to do at the end of the paper. These questions can be difficult to answer because you have to ensure to understand the context and the feel of what i...

Answered by Ekundayo N. • French tutor

2966 Views

There are 495 coins in a bottle. 1/3 of the coins are £1 coins. 124 of the coins are 50p coins. The rest of the coins are 20p coins. Work out the total value of the 495 coins

495/3 = 165 => £165 worth of £1 coins
124 x 0.5 = 62 => £62 worth of 50p coins
We know the number of coins that are NOT 20p coins. Therefore, we can subt...

Answered by Sim B. • Maths tutor

25582 Views

Describe the structure of DNA.

DNA (deoxyribonucleic acid) is a polymer made up of two nucleotide chains held together by hydrogen bonding between nucleotides in a double helix shape.
A nucleotide is made up of a deoxyribose sugar...

Answered by Sim B. • Biology tutor

6194 Views