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Chemistry
GCSE

Why does HCl dissociate in water but not in methylbenzene?

Water is a polar solvent and methylbenzene is a non-polar solvent. A polar solvent will have positive and negative charge (in water, oxygen is slightly more negative and the hydrogen is slightly positi...

Answered by Kartika A. Chemistry tutor
34849 Views

How do metals conduct electricity?

Metallic bonding forms a closely packed lattice structure of positive ions with delocalized electrons (these are the electrons of the outer shell of the metal atom).

Because these electro...

Answered by Oreoluwapo A. Chemistry tutor
54657 Views

Why don't atoms have an overall charge?

Atoms are made up of three types of particles: protons, neutrons and electrons.

The relatives charge on each of these particles are as follows: protons = +1, neutrons = 0, electrons = -1<...

Answered by Oreoluwapo A. Chemistry tutor
17968 Views

What is a mole?

A mole is a name given to a certain number of particles. Amounts of various substances are measured in a unit known as the mole (known as mol for short, symbol 

Answered by Meenakkhi B. Chemistry tutor
3169 Views

How many moles of Magnesium must react with excess Oxygen to produce 80g of Magnesium oxide?

This question looks at the reaction:
Magnesium + Oxygen goes to Magnesium Oxide
Mg + O --> MgO
The first step is to calculate the moles of MgO produced using the mass in the question and...

Answered by Thomas C. Chemistry tutor
19392 Views

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