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Chemistry
GCSE

balance equation : PCl5 + 4H2O → H3PO4 + HCl

fist look at the first molecule on the left of the equation, the first atom is P there's 1 mole and looking at the right there is also only one. the look at the next atom Cl which has five mole, on the ri...

Answered by Christine M. Chemistry tutor
12422 Views

What is an ionic compound and how do they form?

When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms, forming ions.  The resulting compound is called an ionic compound.

A few examples of ionic ...

Answered by Janine A. Chemistry tutor
6572 Views

How is the electronic structure of sodium different to chlorine?

(Draw the two out) 

Chlorine has 7 electrons in its outer shell while sodium has only one.

Answered by Tabitha H. Chemistry tutor
4183 Views

titration calculation: 35cm3 of Hydrochloric Acid reacts with 27.5cm3, 0.3mol/dm3 NaOH. What is the Concentration of the Hydrochloric Acid?

  1. Write out what you know:

    HCL - VOL: 35 --- CONC: (x) --- MOL: (x)
    NaOH - VOL: 27.5 --- CONC: 0.3 --- MOL: (x)

  2. Realise what you can work out - Mol of NaOH in ...
Answered by Ghazn K. Chemistry tutor
3829 Views

Give the pH of an alkaline solution

pH 8-14 (anything above pH 7 can be seen as alkaline)

Answered by Jodie B. Chemistry tutor
2075 Views

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