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What is the best way to go about analysing a primary source?

When attempting a source question, we must take a two-fold approach. The first step is to read it once or twice in order to gauge an overall tone and argument: ...

EF
Answered by Ewan F. History tutor
1991 Views

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...

TD
12344 Views

A wave with a constant velocity doubles its frequency. What happens to the wavelength?

The relationship between velocity, frequency and wavelength is given by: v=fλ.
In this case, we have: v=fλ1 and v=22 .Since the question states that the velocity is const...

TD
3341 Views

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

To answer this question you need to write down and solve an equation. Let's call t a tin of soup and p, a packet. We have: 5t=1750 and 4t+3p=1490. We want to know how much is 3t+2p. 1. Isolate t to find v...

TD
Answered by Tutor164604 D. Maths tutor
4199 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)

VN
Answered by Vishvan N. Chemistry tutor
3580 Views

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