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Source A opposes Germany. How do you know?

We know source A opposes Germany as the nation is depicted as a criminal in the cartoon. As the victors of the First World War, the allies clearly viewed Germany as a criminal and themselves to be the bringe...
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Answered by Hugo N. • History tutor
4401 Views

When do you use the prepositions 'por' and 'para'?

Prepositions are used to relate a word or element in a sentence. 'para' and 'por' are the translation of 'for'. 'Para' is used when there is a destination eg. 'para ti', 'para mi', 'para nosotros'. (for you,...
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Answered by Patricia G. • Spanish tutor
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What is the difference between the verbs 'ser' and 'estar'

'Ser' and 'estar' refer to the verb 'to be'. However, in Spanish the verb 'to be' can be used in different ways depending on the context. For example 'estar' refers to a an emotional state that can vary with...
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Answered by Patricia G. • Spanish tutor
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Periodicity shows a fairly smooth increasing trend across a period for ionisation energy. However, between groups 2 & 3 and groups 5 & 6, the trend doesn't appear to be followed. Using your knowledge of chemistry, explain why the trend isn't followed here

For elements in group 2, their valence electrons consist of "ns 2 " where n is the principle quantum number/shell number. However, for elements in group 3, their valence electrons consist of "...
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Answered by George W. • Chemistry tutor
2369 Views

Solve the equations x-y=1 and 5x-3y=13

These equations are what we call 'simultaneous' which means they are solved together. To do this, we need to make one of the variables (x or y) the subject of either of the equations.Rearranging the first eq...
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Answered by Christopher K. • Maths tutor
5071 Views