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alina1380 [7]
3 years ago
5

7

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

New materials made by burning.

Explanation:

Smoke is formed from the burning of a substance which validates it as a new material made by burning.

The other options such as it being a Gas made by melting is false as smoke isn’t formed from a melting process.

It is not a Liquid from evaporation and isn’t a Solid made from condensation.

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1, 2, or 3...help please
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What is the volume of 9.5 g fluorine gas, F2, at STP?
Tju [1.3M]

Answer:

5.6L

Explanation:

At STP, the pressure and temperature of an ideal gas is

P = 1 atm

T = 273.15k

Volume =?

Mass = 9.5g

From ideal gas equation,

PV = nRT

P = pressure

V = volume

n = number of moles

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T = temperature of the ideal gas

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Number of moles = 0.25moles

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V = 5.599L = 5.6L

The volume of the gas is 5.6L

5 0
3 years ago
Stainless steel is an example of a ____ solution
Margaret [11]
I believe the correct answer from the choices listed above is option B. Stainless steel is an example of a solid-solid solution. It is an alloy which is made up of different metals <span>such as </span>carbon<span>, </span>manganese<span>, phosphorus, sulfur, nickel, chromium and others. Hope this answers the question.</span>
5 0
4 years ago
A stainless steel knife has a volume of 1.2 cubic centimeters and a mass of 9.0 grams.
bija089 [108]

Answer:

7.5

Explanation:

density = mass / volume

9÷1.2 = 7.5

5 0
3 years ago
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