Answer:
The answer will be A
Explanation:
I will send a photo with it
Answer:
it's-B.....................
26 because you need to do 54-28=26
The atomic mass number is the number of protons AND neutrons together.
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Answer:
1.
Explanation:
Let's start with the hydrogen. If we have 4 grams of hydrogen, it would be enough for 4 * 9 = 36 grams of water. Well, that can't be possible ...
4 votes
