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PSYCHO15rus [73]
3 years ago
13

A pressure of 725 mmhg is equal to how many atms

Chemistry
1 answer:
STatiana [176]3 years ago
3 0
0.953948 is what I got from dividing pressure value by 760.
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What does the air in the troposphere do as it heats up from the sun?
Digiron [165]
It usually holds more water because of evaporation and makes the earth very hot.
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2 years ago
Un estudiante debe preparar una disolución 2M de NaCl (58,44 g/mol) en un recipiente de 7L. ?Cuántos gramos de NaCl debe agregar
Gnesinka [82]

Answer:

818.2 g.

Explanation:

  • Molarity is the no. of moles of solute per 1.0 L of the solution.

<em>M = (no. of moles of NaCl)/(Volume of the solution (L))</em>

<em></em>

M = 2.0 M.

no. of moles of NaCl = ??? mol,

Volume of the solution = 7.0 L.

∴ (2.0 M) = (no. of moles of NaCl)/(7.0 L)

∴ (no. of moles of NaCl) = (2.0 M)*(7.0 L) = 14.0 mol.

  • To find the mass of NaCl, we can use the relation:

<em>no. of moles of NaCl = mass/molar mass</em>

<em></em>

<em>∴ mass of NaCl = (no. of moles of NaCl)*(molar mass) =</em> (14.0 mol)*(58.44 g/mol) = <em>818.2 g.</em>

3 0
3 years ago
Which statements correctly describe light (Select all that apply)
egoroff_w [7]

Answer:

The correct answers are C and D.

6 0
2 years ago
If 3.5 g of element X reacts with 10.5 g of element Y to form the compound XY.
irina [24]

Answer:

The percentage by mass of element X is 25 %.

The percentage by mass of element Y is 75 %

Explanation:

X + Y ⇒ XY

3.5 g of element X + 10.5 g of element Y = 14g in total

⇒Element X : 3.5g / 14g = 0.25 ⇒ x 100 % = 25 %

⇒Element Y : 10.5 / 14 = 0.75 ⇒ x 100 % = 75 %

The percentage by mass of element X is 25 %.

The percentage by mass of element Y is 75 %

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3 years ago
It is the gametes formation of a sex cells or reproductive cells.​
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Answer:

Meiosis

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.bnsksksksjabsn...

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2 years ago
Read 2 more answers
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