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adell [148]
3 years ago
7

Which phrase defines an aquifer? A. the total amount of precipitation that falls on an area in a year B. the network of streams

and rivers that flow into a large river C. a lake or a pond that is used to store water D. an underground geological formation that contains a large amount of water
Chemistry
2 answers:
Aleks04 [339]3 years ago
8 0
An aquifer is D. an underground geological formation that contains a large amount of water.
Andrew [12]3 years ago
8 0
D. an underground geological formation that contains a large amount of water
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Explanation:

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Explain the term respiration and how this process increases the percentage of carbon dioxide in the atmosphere.
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Which property of metals allows aluminum to be flattened into thin sheets of aluminum foil?
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What mass of Sodium Chloride is required to make 100.0 mL of 3.0 M solution?
Julli [10]

Answer:

17.55 g of NaCl

Explanation:

The following data were obtained from the question:

Molarity = 3 M

Volume = 100.0 mL

Mass of NaCl =..?

Next, we shall convert 100.0 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

100 mL = 100/1000

100 mL = 0.1 L

Therefore, 100 mL is equivalent to 0.1 L.

Next, we shall determine the number of mole NaCl in the solution. This can be obtained as follow:

Molarity = 3 M

Volume = 0.1 L

Mole of NaCl =?

Molarity = mole /Volume

3 = mole of NaCl /0.1

Cross multiply

Mole of NaCl = 3 × 0.1

Mole of NaCl = 0.3 mole

Finally, we determine the mass of NaCl required to prepare the solution as follow:

Mole of NaCl = 0.3 mole

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl =?

Mole = mass /Molar mass

0.3 = mass of NaCl /58.5

Cross multiply

Mass of NaCl = 0.3 × 58.5

Mass of NaCl = 17.55 g

Therefore, 17.55 g of NaCl is needed to prepare the solution.

5 0
3 years ago
HELP PLEASE ! ! DUE TODAY
slega [8]

Answer:

B is the correct answer I say

5 0
2 years ago
Read 2 more answers
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