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hey there!:
density = 75.0 g/mL
Volume = 12 mL
mass = ?
Therefore:
D = m / V
75.0 =m / 12
m = 75.0 * 12
m = 900 g
Answer B
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To find amount of atoms from mol, multiply the mole amount by Avogadro’s number
5.70x10^32 x 6.02x10^23
= 3.43x10^56 atoms
What don’t understand question
