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givi [52]
2 years ago
10

BRAINLIEST IF YOU SHOW WORK!

Chemistry
1 answer:
likoan [24]2 years ago
4 0

Answer:

3.23 atm

Explanation:

Use the equation P₁V₁=P₂V₂.  P₁ and V₁ are initial pressure and volume.  P₂ and V₂ are final pressure and volume.  Solve for P₂.

(1.88 L)(3.81 atm) = (2.22 L)(P₂)

7.1628 L*atm = (2.22 L)(P₂)

P₂ = 3.226 atm

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2 years ago
A solution is made by adding 29.1 mL of concentrated perchloric acid ( 70.5 wt% , density 1.67 g/mL ) to some water in a volumet
Lera25 [3.4K]

Answer:

The concentration of the solution is 1.364 molar.

Explanation:

Volume of perchloric acid = 29.1 mL

Mass of the solution = m

Density of the solution = 1.67 g/mL

m=1.67 g/mL\times 29.1 mL=48.597 g

Percentage of perchloric acid in 48.597 solution :70.5 %

Mass of perchloric acid in 48.597 solution :

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Moles of perchloric acid = \frac{34.261 g}{100.46 g/mol}=0.3410 mol

In 29.1 mL of solution water is added and volume was changed to 250 mL.

So, volume of the final solution = 250 mL = 0.250 L (1 mL = 0.001 L)

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=\frac{0.3410 mol}{0.250 L}=1.364 M

The concentration of the solution is 1.364 molar.

6 0
3 years ago
Imagine that you have a metal bar sitting half in the sun and half in the dark. On a sunny day, the part of the metal that has b
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It will feel hot.

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The part of the metal that has been sitting in the sun will heat up, and because metal is a good conductor,<em> the part sitting in the sun will heat up the part sitting in the dark</em>.

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How many formula units are in<br> 35.0 g KNO3?<br> (KNO3, 101.11 g/mol)<br><br> [?]×10¹²] fun KNO3
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mol=35:101.11 g/mol=0.346

formula units = 0.346 x 6.02 x 10²³ = 2.082 x 10²³

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Is cheese melting on a hamburger conduction, convection, or radiation?
dybincka [34]

Answer:

convection

Explanation:

4 0
2 years ago
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