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A-level circle question

Answer will be provided during session (easier to write maths than to type)
Answered by • Maths tutor
3776 Views

Outline and explain two consequences of the increase in the number of lone parent families

One consequence of an increasing number of lone parent families is a rise in anti-social behaviour. This is usually because these types of families are at risk of poverty which may cause the children to enga...
Answered by • Sociology tutor
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An industry is producing copper sulphate (CuSO4) from copper carbonate (CuCO3) and sulphuric acid (H2SO4). The company calculated that from 800 g of CuCO3 they will produce 1kg of CuSO4. However they only produced 900g. What is the percentage yield ?

The percentage yield is calculated in the following way: (Actual yield/Theoretical yield)*100 Here, the actual yield is 900g and the theoretical yield that the company calculated is 1kg. First , we have to c...
DL
Answered by Dora L. • Chemistry tutor
2816 Views

explain why a lack of thiamine (vitamin B1) causes a build up of lactate in cells

Thiamine is a co-enzyme for pyruvate dehydrogenase (PHD) the enzyme that converts pyruvate into acetyl-CoA at the start of the Krebs cycle, the 2nd stage of respiration. Without thiamine the activity of PHD ...
JO
3841 Views

How does Aeschylus contrast his presentation of the Persians and the Greeks?

In The Persians , Aeschylus' presentation of the Persians contrasts against his presentation of the Greeks. One of the primary differences between Persians and Greeks is the depiction of the notion of freedo...
EB
5410 Views