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Helen [10]
3 years ago
7

An electrically neutral atom consists of 15 neutrons, 13 electrons, and a

Chemistry
1 answer:
nikitadnepr [17]3 years ago
3 0

Answer:

Answer:

28

Explanation:

it states that the atom is neutral, meaning the number of electrons and protons are the same. so if there are 13 electrons, there are 13 protons. And the mass number is neutrons plus protons. So 13+15 is 28

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Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochlor
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A chemical change because a temperature change occurred, the solid disappeared and a gas was produces

Explanation:

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3 years ago
A volume of 90.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
Gemiola [76]

Answer:

The answer to your question:  0.7 M

Explanation:

Data

V of KOH = 90 ml

[KOH] = ?

V H2SO4 = 21.2 ml

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                       2KOH(aq)  +  H₂SO₄(aq)   →   K₂SO₄(aq)  +  2H₂O(l)

Molarity = moles / volume

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Molarity = 63.8 / 90

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7 0
3 years ago
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