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Chemistry

GCSE

what forces hold the ions together in an ionic compound?

electrostatic forces between oppositely charged ions.

Answered by Anushka J. • Chemistry tutor

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Describe the structure of metal and its bonding and how its structure contribute to its properties.

Metals have a distinct bonding known as metallic bonds, where there is a sea of delocalised electrons and metal ions present. This is due to electrons leaving the atom forming a positive metal ion and a s...

Answered by Ann P. • Chemistry tutor

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A colourless liquid is tested with silver nitrate solution and produces a white precipitate and produces a brick red flame test result. Name the compound found in the colourless liquid

The silver nitrate test is a test for halide ions and the flame test is a test for metal ions, since they produced positive results you have an ionic substance. The result of a white precipitate is the po...

Answered by Lui H. • Chemistry tutor

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What is Le Chatelier's principle and why is it important?

Le Chatelier's principle states, that when a system that is in equilibrium is subject to a change of concentration, volume, pressure or temperature, the equilibrium will shift to counteract this change. T...

Answered by Isabelle H. • Chemistry tutor

3563 Views

0.0960g of Magnesium was reacted with 25cm^3 of HCL of 0.4mol/dm^3 concentration. Calculate the moles of each one and determine which one is in excess

Equations to usemoles = mass/Mrmoles= concentration*volumeAr of Magnesium = 12 Moles= 0.096/12 Moles=0.008Moles of HCL = 25/1000 x 0.4=0.1Therefore HCL is in excess

Answered by Tom G. • Chemistry tutor

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