hannahk1515 hannahk1515

11-06-2022
Chemistry

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How many molecules are in 4.56 grams of CaCl₂?

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arsalaanzahid arsalaanzahid

12-06-2022

Answer:

2.4682 x10 to the power 23

Explanation:

Mr = Ca = 1 x40 =40
Cl = 2 x 35.5 = 71
40 + 71 = 111 ( 111 is the Mr )
Moles= 4.56/111 = 0.041 Moles

Now we will do Moles x Avagadro's constant

0.41 x 6.02 x 10 to the power 23
Answer is 2.4682 x10 to the power 23

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