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algol [13]
3 years ago
10

Why are salt solutions not used to treat the roads during snow events when the temperature is below -15 degrees Celsius? *

Chemistry
1 answer:
Marta_Voda [28]3 years ago
3 0

Answer:

i think thats c

Explanation:

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If you have 0.50 mol of ca, how many atoms are present?
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Answer is: there are 3.011·10²³ atoms of calcium.

n(Ca) = 0.50 mol; amount of substance(calcium).
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N(Ca) = n(Ca) · Na.
N(Ca) = 0.50 mol · 6.022·10²³ 1/mol.
N(Ca) = 3.011·10²³; number of calcium atoms.
The mole is an SI unit which measures the number of particles in substance. One mole is equal to <span><span>6.022</span></span>·<span><span><span>10</span></span></span>²³<span> atoms.</span>
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