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How do you balance an equation

First write out the equation given:Na + O 2 —> Na 2 ONow count how many oxygen atoms are on the LHS of equation (2) and how many are on the RHS (1). This means you must put a 2 in front of the Na 2 O to B...
LS
Answered by Lauren S. • Chemistry tutor
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How did Tsar Nicholas II survive the 1905 Revolution? (6 marks)

The 1905 Revolution shook Tsar Nicholas' power, yet he survived the rebellion by using using two main strategies. Firstly, Nicholas conceded some degree of power to the Russian Parliament, known as the Duma....
DB
Answered by Dan B. • History tutor
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Explain how temperature affects how enzymes work

Definition of enzymes: Biological catalysts that speed up the rate of reaction by lowering the activation energy , with no effect on equilibrium. They are proteins that have a specific shape . For the enzyme...
GR
Answered by Giulia R. • Biology tutor
11248 Views

Solve the simultaneous equation: 2x + y = 18 and x−y=6

Check to see if the number in front (coefficient) of either the x's or y's is the same. In this case both the y's have the same coefficient so we do not need to make them the same.We are going to add the par...
CK
Answered by Chelsea K. • Maths tutor
5184 Views

How to design an experiment for an exam question?

Identify what type of 'experiment' the question is asking forIdentify key factors of an experiment:what is the aim/hypothesis of the experiment?what features need to be considered: number of Participants, Ma...
HS
Answered by Helena S. • Psychology tutor
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