Why is helium heavier than hydrogen
2 answers:
Helium has more protons making it heavier by one atomic mass.
Answer:
because it's has an additional electron. hydrogen is just made up of one proton
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It is actually Group 3A elements. I just took the test.
Answer:
the answer is a
took it on edge
Explanation:
I believe it’s Dermatology
Multiply the values.
n = cv
Where
n =mol
c = concentration
v = volume
n = 2.5×1.5 = 3.75mol
