Answer:
1.4 g/cm3
Explanation:
Density = Mass/Volume
Mass = 21g
Volume = 15cm3
Density = 21/15 = 1.4
b
2 H atoms
1 Mg
5 total atoms
The another word for microorganism is microbe
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Answer: it’s a I believe
Explanation: protons are smaller then atoms which means they have less mass
