3. How many moles are present in 4.20 x 10^26 molecules of water? (4 Points)
700 moles
0.7 moles
70 moles
25.2 moles

0.432 mol. Explanation: Divide the given number of molecules by Avogadro's constant. Avogradro's constant is the number of atoms/molecules ...

Explanation:

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b