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Alja [10]
3 years ago
6

calculate the molarity of a solution that contains 2 moles of NaOH dissolve in 0.5 liter of the solution

Chemistry
1 answer:
bonufazy [111]3 years ago
8 0

The equation for molarity is molarity equals moles divided by liters of solution. Knowing this, it's just simple algebra of 2 moles divided by .5 liters, equaling 4M (M standing for molarity).

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If a house viewed through infrared goggles ,where would the most seen
Serjik [45]

Answer:

The answer is D - near the roof.

Explanation:

Attics don't have a ton of insulation or hard cinder-block to block the goggles form seeing through it. This is why the attic can be a place where the temperature varies with the outside temperature.

5 0
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Type the correct answer in the box. Express your answer to three significant figures.
satela [25.4K]

Answer:

The partial pressure of argon in the jar is 0.944 kilopascal.

Explanation:

Step 1: Data given

Volume of the jar of air = 25.0 L

Number of moles argon = 0.0104 moles

Temperature = 273 K

Step 2: Calculate the pressure of argon with the ideal gas law

p*V = nRT

p = (nRT)/V

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⇒ with T = the temperature = 273 K

⇒ with V = the volume of the jar = 25.0 L

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p = 0.00932 atm

1 atm =101.3 kPa

0.00932 atm = 101.3 * 0.00932 = 0.944 kPa

The partial pressure of argon in the jar is 0.944 kilopascal.

5 0
3 years ago
A Is an ecosystem that is covered with water for at least part of the year
ruslelena [56]
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Answer:

156 Hydrogen atoms

Explanation:

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Examples of solid mixtures
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Salad, a bag of different colored pebbles or sand, etc
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