I don't know what the problem is, but here are some rues to help you out:
- All non-zero figures are significant
- When a zero falls between non-zero digits, that zero is significant.
- When a zero falls after a decimal point, that zero is significant.
- When multiplying and dividing significant figures, the answer is limited to the number of sig figs equal to the least number of sig figs in the problem.
- When adding and subtracting, the answer is limited to the number of decimal places in the number with the least number of decimal places.
Answer:
1.c
2.c
3.a
4.b
5.a
i think that's the answer
In decomposition, two or more reactant combine to form one product only.
Answer:
B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how
