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RUDIKE [14]
3 years ago
6

Which Ion has the same electron configuration as an Ar atom

Chemistry
1 answer:
Troyanec [42]3 years ago
7 0
Ar (argon) has 18 electrons

Cl- would give you 18 electrons
F- would give you 10 electrons
Li+ would give you 2 electrons
Na+ would give you 10 electrons

Cl- would be the correct answer
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Balance this equation. If a coefficient of "1" is required, choose "blank" for that box.
Kitty [74]

Answer: 2 C2H4 + 6 O2 => 4 CO2 + 4 H2O

Explanation:The coefficient are as follows: 2: 6: 4: 4

Each atom on the reactant and product side are equal.

Reactant Product

C 2x2 = 4 4x1 = 4

H 2x4 = 8 4x2 = 8

O 6x2 = 12 (4x2) + 4 = 12

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3 years ago
What happens to the energy of the universe during a chemical or physical process
yulyashka [42]

Answer:

unchanged

Explanation:

In any chemical of physical process, energy is neither created nor destroyed. A process that absorbs the heat from the surroundings. ... What happens to the energy of the universe during a chemical or physical process? During any chemical or physical process, the energy of the universe remains unchanged.

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What can we learn about past climate changes from ice cores?
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A sample of trifluoroacetic acid, C2HF3O2, contains 38.9 g of oxygen. Calculate the mass of the trifluoroacetic acid sample.
qwelly [4]

Answer:

138.6 g of  C₂HF₃O₂ have 38.9 g of O

Explanation:

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Molar mass = Mass of C . 2 + Mass of H + Mass of F . 3 + Mass of O .2

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1 mol of C₂HF₃O₂ has:

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1 mol of H

3 moles of F

2 moles of O

If we state the relation in mass by g we say:

114 g of  C₂HF₃O₂ have 24g of C, 1 g of H, 57 g of F and 32 g of O

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32 g of O are contained in 114 g of  C₂HF₃O₂

38.9 g of O may be contained in (38.9 . 114) / 32 = 138.6 g

8 0
3 years ago
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