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alisha [4.7K]
3 years ago
13

The Milky Way Galaxy is one of

Chemistry
2 answers:
9966 [12]3 years ago
7 0

Answer:

Billions in the known universe!

Explanation:

Because there are approximately 100 billion galaxies in the observable universe.

Hope it helps!

Agata [3.3K]3 years ago
7 0

Answer:

there are billions, and more that we haven't yet explored, it is just let the sea only a lot more floaty!

hope this helps

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4. Convert the following: a. 4g mol of MgCl2 to g b. 2 lb mol of C3H8 to g c. 16 g of N2 to lb mol d. 3 lb of C2H6O to g mol
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The molecular weight (mw) of a compound is the mass of it per mole, so it's the ratio of the mass (m) per mole (n).

a) The molecular weight of one mol is found at the periodic table. So, for Mg, mw = 24.3 g/mol, for Cl = 35.5 g/mol, so for MgCl2, mw = 24.3 + 2*35.5 = 95.3 g/mol. The g mol is the mass divided by the molecular weight:

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b) The pound (lb) is a unity of mass, and the lb mol is a unity of the mass divided by the molecular weight. So, by the periodic table, the molecular weight of C3H8 is 3*12 (of C) + 8*1 (of H) = 44 lb/mol.

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g mol = 1360.78/46

g mol = 29.6 g mol

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