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Rom4ik [11]
3 years ago
6

Which of the following gases was NOT part of Earth’s original atmosphere?

Chemistry
2 answers:
musickatia [10]3 years ago
8 0

Answer:oxygen hahah

Explanation:

xenn [34]3 years ago
4 0

Answer:anser choices

Explanation:

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Five physical properties of ionic compounds
ipn [44]

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what is ionic? Is it iron

Explanation:

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3 years ago
Gold forms a substitutional solid solution with silver. Calculate the number of gold atoms per cubic centimeter (in atoms/cm3) f
Leokris [45]

Answer:

Gold: 1.1 x 10²² atoms/cm³

Silver: 4.8 x 10²² atoms/cm³

Explanation:

100 g of the alloy will have 29 g of Au and 71 g of Ag.

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29 g Au ______  x

x = 1.5 cm³

10.49 g Ag ____ 1 cm³

71 g Ag _______   y

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Gold:

196.97 g Au____ 6.022 x 10²³ atoms Au

29 g Au _______ w

w = 8.9 x 10²² atoms Au

8.9 x 10²² atoms Au ____ 8.3 cm³

           A                    ____ 1 cm³

A = 1.1 x 10²² atoms Au

Silver:

107.87 g Ag____ 6.022 x 10²³ atoms Ag

71 g Ag _______ w

w = 4.0 x 10²³ atoms Ag

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          B                    ____ 1 cm³

B = 4.8 x 10²² atoms Ag

6 0
3 years ago
Ethylene C2H2 reacts with Oxygen according to the equation below.what volume of Oxygen (in dm3) reacts with 0.40 dm3 of C2H2 ?
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3 0
3 years ago
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