Answer:
33.8.
Explanation:
Hello,
In this case, since the used equation is:

Whereas the specific heat is 4.184 J/(g°C), we compute the mass as follows:

Thus, the mass turns out:

And without units:
33.8.
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Answer: 9000 - 1 significant figure
Explanation: Since you are multiplying, the number with the least amount of significant figures determines the number of significant figures in the answer. The number 9 has 1 significant figure and 1025 and has 4 significant figures so 9 has the fewest significant figures, meaning your answer will be 1 significant figure.
With a pH of five, it would mean that this substance is a weak acid one would also it expect it would be sour.
A molecule is multiple atoms put together so an atom will always be smaller