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elena-14-01-66 [18.8K]
3 years ago
9

What is the formula of the compound formed between the potassium ion and the sulfide ion?

Chemistry
1 answer:
KIM [24]3 years ago
4 0
The formula for K+ and S-2 is K2S because you need 2 potassium ions to balance out the sulfide ion
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Which of the following is the best example of water changing from a liquid to a gas?
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Answer:

c

Explanation:

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Look at the periodic table.
zhuklara [117]

Answer:

Mg^{+2}

Explanation:

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You can obtain a rough estimate of the size of a molecule with the following simple experiment: Let a droplet of oil spread out
mina [271]

Answer:

The diameter of the oil molecule is 4.4674\times 10^{-8} cm .

Explanation:

Mass of the oil drop = m=9.00\times 10^{-7} kg

Density of the oil drop = d=918 kg/m^3

Volume of the oil drop: v

d=\frac{m}{v}

v=\frac{m}{d}=\frac{9.00\times 10^{-7} kg}{918 kg/m^3}

Thickness of the oil drop is 1 molecule thick.So, let the thickness of the drop or diameter of the molecule be x.

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x= 4.4674\times 10^{-10} m= 4.4674\times 10^{-8} cm

The thickness of the oil drop is 4.4674\times 10^{-8} cm and so is the diameter of the molecule.

6 0
3 years ago
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mas
dalvyx [7]
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DochEvi [55]

Answer:

Br - C ≡ N

Explanation:

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The most stable structure that respects these premises is:

Br - C ≡ N

It does not have any H atom.

8 0
2 years ago
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