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Shtirlitz [24]
3 years ago
7

Which of the following is a pure substance? Choose all that apply.

Chemistry
2 answers:
worty [1.4K]3 years ago
7 0
Nickel is a pure substance

Rust is also a pure substance
Brums [2.3K]3 years ago
6 0
Nickel is a pure substance:
Final answer: B
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Empirical formula of C6H10O6
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Answer:

I don't know.

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Hoon2. In words, describe how the changing positions of the sun, moon, and Earthleadthe different moon phases.
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7 0
4 years ago
Which statement is true about the speed of light
Sedbober [7]

Answer:

nothing can travel faster than light

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Explanation:

5 0
3 years ago
g 1.000 atm of oxygen gas, placed in a container having a pinhole opening in its side, leaks from the container 2.14 times faste
Ivan

The question is incomplete, the complete question is;

1.000 atm of Oxygen gas, placed in a container having apinhole opening in its side. leaks from the container 2.14 timesfaster thatn 1.000 atm of an unknown gas placed in this sameapparatus. Which of the following species could be theunknown gas?

A. CL2

B. SF6

C. Kr

D. UF6

E. Xe

Answer:

SF6

Explanation:

From Graham's law;

Let the rate of diffusion of oxygen be R1

Let the rate of diffusion of unknown base be R2

Let the molar mass of oxygen by M1

Let the molar mass of unknown gas be M2

Hence;

R1/R2 = √M2/M1

So;

2.14/1 = √M2/32

(2.14/1)^2 = M/32

M= (2.14/1)^2 × 32

M= 146.6

This is the molar mass of SF6 hence the answer above.

7 0
3 years ago
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