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pogonyaev
2 years ago
8

An atom has a mass number of 25 and 13 neutrons. what is the atomic number of this atom? express your answer as an integer.

Chemistry
1 answer:
Snowcat [4.5K]2 years ago
5 0
13 because an atom has the same number of protons as neutrons
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At the same temperature, a freshwater lake frezzes but a salt water bay does not because
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What best describes a molecule
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Suppose a student started with 142.0 mg of trans-cinnamic acid, 412 mg of pyridinium tribromide, and 2.30 mL of glacial acetic a
nirvana33 [79]

Answer: Theoretical Yield = 0.2952 g

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The molar ratio according to the equation mentioned is equals to 1:1

The brominated product moles is also = 9.584*10⁻⁴ mol

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Percentage Yield is : Actual Yield / Theoretical Yield = 0.2223/0.2952

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4 0
3 years ago
When dissolved in water, koh behaves as an acid that forms k+ and oh- ions. a base that forms ko- and h+ ions. a base that forms
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Answer:

A base that forms K⁺ and OH⁻ ions.

Explanation:

The KOH is an Arrhenius base.

A is <em>wrong</em>. A base does not form H⁺ ions.

B is <em>wrong</em>. A metal hydroxide forms K⁺ ions, not KO⁻ ions.

D is <em>wrong</em>. The metal forms K⁺ ions, KO⁻ ions.

4 0
2 years ago
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