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liubo4ka [24]
3 years ago
10

Water and salt are compounds made of the combination of more than

Chemistry
1 answer:
inn [45]3 years ago
8 0

Answer:

A. Because they are compounds, they cannot be pure substances.

Explanation:

The false statement from the given choices is that because they are compounds they cannot be pure substances. In fact, because they are compounds they are pure substances.

Pure substances are made up of elements and compounds and they have the following properties:

  • All parts are the same throughout
  • Composition is definite
  • They cannot easily be separated or broken
  • Separation by physical method is not easy
  • They have unique sets of physical and chemical properties.
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vitfil [10]

Answer: 72.93 litres

Explanation:

Given that:

Volume of gas (V) = ?

Temperature (T) = 24.0°C

Convert 24.0°C to Kelvin by adding 273

(24.0°C + 273 = 297K)

Pressure (P) = 1.003 atm

Number of moles (n) = 3 moles

Molar gas constant (R) is a constant with a value of 0.0821 atm L K-1 mol-1

Then, apply ideal gas equation

pV = nRT

1.003 atm x V = 3.00 moles x 0.0821 atm L K-1 mol-1 x 297K

1.003 atm•V = 73.15 atm•L

Divide both sides by 1.003 atm

1.003 atm•V/1.003 atm = 73.15 atm•L/1.003 atm

V = 72.93 L

Thus, the volume of the gas is 72.93 litres

5 0
3 years ago
Given the following information:
bonufazy [111]

Answer:

Ya'll should really practice more because things like these are easy

Explanation:

6 0
2 years ago
Calculate the wavelength of light with a frequency of 1.89 x 1018 Hz.
Charra [1.4K]
Which sentence from "Black Hole Beginnings" contains a cause-and-effect relationship?
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Challenge question: This question is worth 6 points. As you saw in problem 9 we can have species bound to a central metal ion. T
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Answer:

A

Explanation:

Iron has the ground state electronic configuration [Ar]3d64s2

Fe2+ has the electronic configuration [Ar]3d6.

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3 0
3 years ago
"An unsaturated solution is formed when 80 grams of salt is dissolved in 100 grams of water at 40° celsius. This salt could be..
olchik [2.2K]

Answer:

3. NaNO3

Explanation:

Below the line on TABLE G in the reference tables at 40C

4 0
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