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irinina [24]
3 years ago
8

The probability of rejecting the null hypothesis when, in fact, the null hypothesis is true is called the.

Mathematics
1 answer:
anygoal [31]3 years ago
6 0

Answer:

Type I error

Step-by-step explanation:

A type I error is a false positive, which is when a researcher rejects a null hypothesis when it is, in fact, true

A type II error is a false negative, which is when a researcher fails to reject a null hypothesis and accepts it when it is, in fact, false.

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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;

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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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2 years ago
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