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xz_007 [3.2K]
3 years ago
5

a 90.0g sample of nacl is dissolved in water to make a solution with a volume of 3.00 l. what is the molarity of this solution?

SAT
1 answer:
ArbitrLikvidat [17]3 years ago
8 0

Am fat be back

Explanation:

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In an experiment, the __________ is the part that does not change. A) independent variable B) constant C) dependent variable
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Constant variable...Option B

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Assuming ideal solution behavior, how many liters of hcl gas, measured at 30. 0 °c and 745 torr, are required to prepare 1. 25 l
Nostrana [21]

The volume of HCl gas required to prepare the solution is 101.54 L

<h3>How to determine the mole of HCl </h3>
  • Volume of solution = 1.25 L
  • Molarity = 3.20 M
  • Mole of HCl =?

Mole = Molarity x Volume

Mole of HCl = 3.2 × 1.25

Mole of HCl = 4 moles

<h3>How to determine the volume of HCl </h3>
  • Number of mole (n) = 4 moles
  • Temperature (T) = 30 °C = 30 + 273 = 303 K
  • Pressure (P) = 745 torr = 745 / 760 = 0.98 atm
  • Gas constant (R) = 0.0821 atm.L/Kmol
  • Volume =?

Using the ideal gas equation, the volume of the HCl gas can be obtained as follow:

PV = nRT

Divide both side by P

V = nRT / P

V = (4 × 0.0821 × 303) / 0.98

V = 101.54 L

Learn more about ideal gas equation:

brainly.com/question/4147359

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2 years ago
If the ph of a solution is decreased from 10 to 8, it means that the.
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Answer:

The solution is more acidic and is closer to become neutral.

Explanation:

Acidic level: 0 - 6

Neutral: 7

Alkaline level: 8 - 14

From this, we can see that the given solution went from a higher alkaline concentration level to a lower one.

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the speed of light in glass is slower than the speed of light in space

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The deeper you go in both Earth's interior and the swimming pool the greater the pressure grows. The difference is the swimming pool contains, mostly liquid and Earth's interior contains mostly solids.

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