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olchik [2.2K]
3 years ago
8

What is the 44 president of america​

SAT
2 answers:
shtirl [24]3 years ago
6 0

Answer:

Barack Obama

Explanation:

ki77a [65]3 years ago
6 0
The answer is Barack Obama
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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
Is 920 a good score on the psat?
enyata [817]
It all depends on your grade level. For sophomores, I would assume that it is an average score ( I am a sophomore myself, but I received a 1270). For juniors, this is below average. Your schools curriculum comes into play as well. So in short, yes or sophomores and no for juniors.
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What chemicals are the sun made of?
Shalnov [3]

Answer:

what chemicals are the sun made of

Like any star in its prime, the sun consists mainly of hydrogen atoms fusing two by two into helium, unleashing immense energy in the process. But it's the sun's tiny concentration of heavier elements, which astronomers call metals, that controls its fate.

Explanation:

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Every cell of every living thing on earth contains all the information it needs to create, duplicate and make variations of:
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Answer: itself

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What motivates you? <br> Give me an example how you are dependable and responsible?
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Are you asking us or- If this is on your text/exam, you should write what motivates you...its that simple lol

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3 years ago
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