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german
3 years ago
5

Use the mole concept to calculate the number of atoms that are in a 1.75-mol sample of CHCl3.

Chemistry
1 answer:
Fiesta28 [93]3 years ago
6 0
This is how I got to that answer. Since we don't know how many atoms there are in a mole, we use the number 6.02 x 10^-23. Now, just plug in what you have in the equation: 

<span>1.75 moles ChCl3 x (6.02 x 10 ^-23) / 1 mole = 1.0535 x 10^-22 atoms. </span>
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To solve this question we must convert the mass of CaCl2 to moles. Using the chemical equation we can find the moles of NaCl and its mass:

<em>Moles CaCl2 -Molar mass: 110.98g/mol-</em>

156.0g CaCl₂ * (1mol / 110.98g) = 1.4057 moles CaCl2

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2.811 moles NaCl * (58.44g / mol) = 164.3g of NaCl

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