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Chemistry
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Define enthalpy of neutralisation and state standard conditions:

Enthalpy of Neutralisation: the energy change a system experiences when one mole of water is formed from the neutralisation of an acid with an alkali under standard conditions.Standard conditions: 298K, 1...

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Answered by Sam H. Chemistry tutor
6695 Views

How many Protons, Neutrons and Electrons are there in an atom of Silicon, Si?

Using a copy of the periodic table, look up the Mass and Atomic numbers of Silicon. Mass number = 28; Atomic number = 14. The Atomic number is equivalent to the number of Protons in an atom, so there are ...

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Answered by Eloise S. Chemistry tutor
160979 Views

Describe how a sample of copper chloride crystals could be made from copper carbonate and dilute hydrochloric acid.

To make crystals of copper chloride from copper carbonate andd dilute HCl, you will firstly need to add an excess of copper carbonate to the dilute HCl (keep adding until no more reacts). Next, take the s...

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Answered by Sian J. Chemistry tutor
29078 Views

Calculate the amount of moles in 36 grams of carbon

We need to use the equation : Moles=Mass/MrSubstitute in value : moles= 36/12Therefore number of moles in 36 grams of carbon is 3.

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Answered by Ramisha K. Chemistry tutor
15728 Views

Describe dynamic equilibrium with reference to a process you have been learning in class.

Dynamic equilibrium is when the forward and reverse reactions happen at the same time and rate so there is no overall net change. A reaction that can be used as an example is the Haber Process:

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Answered by Hasham S. Chemistry tutor
2097 Views

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