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elena-s [515]
3 years ago
11

It took Marjorie 15 minutes to drive from her house to her daughter's school. If they school was 4 miles away from her house, wh

at was her unit rate of speed?
Mathematics
2 answers:
notka56 [123]3 years ago
8 0
The answer would be 3.75 miles por minute
mars1129 [50]3 years ago
4 0
The answer is 3.5 unite rate of speed per min
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The molar mass of AlCl3 is 133.34 g/mol. How many molecules of AlCl3 are there in 2 g?
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To solve this problem, we have to apply mole-concept to this and we would need the molar mass of AlCl3.  2g of AlCl3 contains 9.034*10^21 molecules.

<h3>Number of Molecules in 2g of AlCl3</h3>

The molar mass of AlCl3 is given as 133.34g/mol

Data;

  • mass = 2g
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Using the mole concept, we can equate the molar mass to the number of molecules present in the entity.

133.34g = 6.023*10^2^3

If we equate this

133.34g = 6.023*10^2^3\\2g = x molecules\\x = \frac{2*6.023*10^2^3}{133.34} \\x = 9.034*10^2^1 molecules

From the calculations above, 2g of AlCl3 contains 9.034*10^21 molecules.

Learn more on mole concept here;

brainly.com/question/21150359

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