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Describe what happens when 2 atoms of Potassium react with one atom of Sulphur

Potassium has 1 electron in its outer shell whilst Sulphur has 6 electrons in its outer shell, this can be deduced from the periodic table as Potassium is in group 1 and Sulphur group 6. When the two react t...
AH
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What is hybridisation and how can it be used to explain the shapes of molecules?

Before we start on exploring the implications of hybridisation, we should start with a definition. Hybridisation can be thought of as the mixing atomic orbitals into new hybrid orbitals suitable that can be ...
RM
Answered by Rebecca M. • Chemistry tutor
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What is a titration?

Titrations are used to make soluble salts (remember solubility rules) from an acid and an alkali. There are no solids involved in this reaction and the solutions made are colourless so there is no way of tel...
BH
Answered by Beatrix H. • Chemistry tutor
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What is the difference between a heterogeneous catalyst and a homogeneous catalyst?

Homo geneous catalyst - catalyst is in the same phase as the reactants. Hetero geneous catalyst - catalyst is in a different phase as the reactants. What this means is that the reactants will be either a gas...
KW
Answered by Katie W. • Chemistry tutor
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Compare the advantages and disadvantages of using bioethanol over fossil fuels.

Bioethanol is a renewable fuel produced from plants, which photosynthesise to grow, taking in carbon dioxide and producing oxygen. This means there is no net increase in carbon dioxide, which is a greenhouse...
MI
Answered by Michael I. • Chemistry tutor
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