Top answers

Chemistry
GCSE

Iron is found in the Earth as iron oxide (Fe2O3). Iron oxide is reduced to produce iron. Balance the equation for the reaction. ___Fe2O3 + ___C → ___Fe + ___ CO2

Balancing means that you have the same number of atom on one side as you do on the other. The reason for balancing is because atoms are not lost or created during a reaction. Keep in mind that when you ba...

Answered by Tutor164604 D. Chemistry tutor
9764 Views

CuCl2 + 2NaOH --> Cu(OH)2 + 2NaCl. 100kg of CuCl2 reacts with excess Sodium Hydroxide. 50kg of Sodium Chloride is produced. Calculate the theoretical yield of Sodium Chloride, and hence the percentage yield of Iron in this reaction.

Theoretical Yield of NaCl = 86.7kg (3sf)Percentage Yield of Iron = 57.7% (3sf)

Answered by Vishvan N. Chemistry tutor
2905 Views

How do you know which chemicals are formed at the electrodes in the electrolysis of aqueous solutions?

In electrolysis, positive ions will be attracted to the negative cathode (the cathode being negative can be remembered because cats are evil). However, in aqueous solutions there are 2 positive ion...

Answered by Syed Bilaal A. Chemistry tutor
4232 Views

Why can crude oil be separated by fractional distillation?

Crude oil is composed from hydrocarbons of varying chain length. Hydrocarbons with longer chains have higher boiling points due to the increasing strength of intermolecular forces with length, therefore t...

Answered by Charlotte F. Chemistry tutor
4881 Views

Explain the physical properties of graphite in terms of its structure and bonding

Graphite is a giant covalent molecule. This means it has many atoms joined together by covalent bonds. Graphite consists of layers of carbon atoms joined together by

Answered by Eliza D. Chemistry tutor
10356 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences