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valina [46]
3 years ago
14

Convection is the up and down movement of what?

Chemistry
1 answer:
Fynjy0 [20]3 years ago
3 0
Convection is the up and down movement of heat. Usually air, but convection also occurs in the ocean.
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What is the molarity of a solution that contains 0.400 mol HCl in 9.79 l solution?
Maslowich

Answer:

  • Option B, 0.0409 M

Explanation:

<u>1) Data:</u>

a) M = ?

b) n = 0.400 mol

V = 9.79 liters

<u>2) Formula:</u>

  • M = n / V (in liters)

<u>3) Solution:</u>

  • M = 0.400 mol / 9.79 liter = 0.04086 M

  • Since each data contain 3 significant digits, the answer must be reported with 3 significant digits. So, the correct answer is 0.0409 M, which is the option B.
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140000 rounded to 3 sig gigs
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