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MissTica
3 years ago
5

What is the concentration of a 500 mL solution with 25 mol of HF? Write your answer with TWO decimal places and round accordingl

y.
Chemistry
1 answer:
elena55 [62]3 years ago
7 0

Answer:

oop I'm thinking hmmmmm

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Sunny_sXe [5.5K]
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7 0
3 years ago
A gas has a volume of 5.00 L at 20.0oC. If the gas is compressed to 4.0 L, what is the new temperature of the gas in Kelvin?
Tatiana [17]

Answer: 234.4K

Explanation:

Given that,

Original volume of gas (V1) = 5.00 L

Original temperature of gas (T1) = 20.0°C

[Convert 20.0°C to Kelvin by adding 273

20.0°C + 273 = 293K]

New volume of gas (V2) = 4.0L

New temperature of gas (T2) = ?

Since volume and temperature are given while pressure is held constant, apply the formula for Charle's law

V1/T1 = V2/T2

5.00L/293K = 4.0L/T2

To get the value of T2, cross multiply

5.00L x T2 = 293K x 4.0L

5.00L•T2 = 1172L•K

Divide both sides by 5.00L

5.00L•T2/5.00L = 1172L•K/5.00L

T2 = 234.4K

Thus, the new temperature of the gas is 234.4 Kelvin

8 0
3 years ago
Name four products of incomplete combustion<br><br> 1<br> 2<br> 3<br> 4
velikii [3]

Answer:

carbon dioxide hydrogen chloride carbon monoxide and nitrogen oxide

8 0
3 years ago
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John has a solution with a pH of 12.21. what is the hydrogen ion concentration of this solution? ​
Georgia [21]

Answer:

  1. In this way, ph is determined by hydrogen ion concentration . In the case of neutral solution [H+] =10-7 which we call a ph of 7. This means, for example, that a hydrogen-ion concentration of a solution with a ph of 4 is 10-4 mol/l, meaning it contains 0.0001 mole of hydrogen ion in a solution of 1 liter.

5 0
3 years ago
A neutral atom has 8 electrons and 8 neutrons. Which of the following correctly represents the atom? A) carbon-16 B) oxygen-16 C
bija089 [108]

Answer:

D

Explanation:

Oxygen is the 8th element in the periodic table. This means that oxygen has 8 protons and 8 electrons. In order to get the number of neutrons you take the atomic weight in this case 15.9999~16 and you subtract it by the number of protons (16-8).

6 0
3 years ago
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