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son4ous [18]
3 years ago
10

In a neutral atom, the number of electrons equals the number of neutrons True False

Chemistry
1 answer:
Kobotan [32]3 years ago
6 0

Answer:

true

Explanation:

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In the laboratory you are asked to make a 0.303 m cobalt(II) sulfate solution using 275 grams of water. How many grams of cobalt
valentinak56 [21]

Answer: 12.92g of CoSO4

Explanation:

Molar Mass of CoSO4 = 59 + 32 + (16x4) = 59 + 32 +64 = 155g/mol

Molarity of CoSO4 = 0.303mol/L

Mass conc. In g/L = Molarity x molar Mass

= 0.303x155 = 46.965g/L

275 grams of water = 0.275L of water

46.965g of CoSO4 dissolves in 1L

Therefore Xg of CoSO4 will dissolve in 0.275L i.e

Xg of CoSO4 = 46.965x0.275 = 12.92g

Therefore 12.92g of CoSO4 is needed

4 0
3 years ago
If a stack of 1,008 alkali fuel cells in series generates 14,800 W of power, and each cell contributes equally to the power of t
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Answer:

Each cell contributes power of 14.7 Watts.

Explanation:

Total power generated by alkali furl cells = 14,800 Watts

Total number of fuel cells = 1,008

Power produced by one fuel cell = x

Total power generated = 14,800 Watts=x\times 1,008

x=\frac{14,800 Watts}{1,008}=14.6825 Watts\approx 14.7 Watts

Each cell contributes power of 14.7 Watts.

6 0
3 years ago
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Why is portion control important
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Portion control is controlling the amount of food you eat. It is important because your body needs a certain amount of vitamins and protein.

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What is the law of redox reactions?
lbvjy [14]

Answer:

. All redox reactions occur with a simultaneous change in the oxidation numbers of some atoms. At least two elements must change their oxidation numbers. When an oxidation number of an atom is increased in the course of a redox reaction, that atom is being oxidized

Explanation:

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solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays.

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