Answer:
The answer is C I think..
Answer:
14720000
Explanation:
1 kg = 1000000 mg
14.72 kg = 14.72 x 1000000
=14720000
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The only metal that is a liquid at room temperature is mercury!!
Answer: 12 atoms
Explanation: the equation has 6H2 i.e
6*2 = 12
The sub-atomic particles of an atom are the proton, electron and the neutron. An electron has a charge of -1 and a smaller
mass than a proton. Proton has the same mass with the neutron. The ratio
between the mass of a proton and an electron is about 2000. An electron has an
equal value but negative charge with the proton.