Top answers

Chemistry
GCSE

c) What does the rate of reaction depend on? (2 marks)

  1. Collision frequency of reacting particles
  2. Energy transferred during the collision
CP
Answered by Claire P. Chemistry tutor
2156 Views

b) What 3 factors can increase the rate of reaction? (3 Marks)

b) A catalysis, increased temperature, increased concentrationb

CP
Answered by Claire P. Chemistry tutor
2148 Views

a) Complete the balanced symbol equations: (2 marks) H2SO4 + NaOH  HCl + Mg(OH)2 

H2SO4 + 2NaOH --> 2H2O + Na2SO4
2HCl + Mg(OH)2 --> 2H2O + MgCl2

CP
Answered by Claire P. Chemistry tutor
3735 Views

A compound being analysed has the percentage composition by mass Ca = 13.9%, W = 63.9%, O = 22.2%. Calculate the empirical formula of this compound

Using rows to represent mathematical operations and a column for each compound we can draw ourselves a table:

                             Ca       W      O
%                         13.9    ...

HD
Answered by Haydn D. Chemistry tutor
5002 Views

How can I work out whether a hydrocarbon is an alkene or an alkane from its molecular formula?

Step 1:

  • Look at the molecular formula of the hydrocarbon you have been given.

  • (This is the formula that tells you exactly how many hydrogens and ...

AH
Answered by Alice H. Chemistry tutor
11569 Views

We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences