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Answer:
The elements in each group have similar chemical properties.
Explanation:
This is correct because all elements in a group have a similar electron configuration in the outer most shell, therefore they will have similar chemical properties.
Answer:
hydrogen + oxgen = nitrogen
The answer would be 1.25g
Since you have 10g of a substance, you would need to half your substance by doing this: 42/14=3
Once doing this you would half your substance 3 times like so:
10/2=5
5/2=2.5
2.5/2=1.25