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andriy [413]
2 years ago
11

An atom has 16 protons, 16 electrons, and 18 neutrons.

Chemistry
1 answer:
Rom4ik [11]2 years ago
4 0

Answer:

B

Explanation:

Mass number = p+n=16+18=34

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What is a neutralisation reaction? Give two examples.
ozzi

Explanation:

A neutralization is a type of double replacement reaction. a salt is the product of an acid-base reaction and is a much broader term then common table salt.

Example:-

(i) HCl + NaOH ---> NaCl + HOH

(ii) H2SO4 + 2NH4OH ---> (NH4)2SO4 + 2HOH.

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3 years ago
NH3 +<br>H2SO4 → __(NH4)2SO4​
Zielflug [23.3K]

Answer:

This is not a balanced equation

Explanation:

Let's make it a balanced equation.

2 NH3 + H2So4 = (NH4)2So4

Glad I could help!!

8 0
3 years ago
Chemical changes
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The correct answer is that chemical changes form new compounds. Chemical change is a change where the substance changes in identity or form new substances after undergoing a process. On the other hand, a physical change is a change in the properties of matter that does not change the identity of the substance. 
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Katrina tried to take pictures with her cell phone but discovered that its battery was dead. What happened to the battery?
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2 years ago
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Black coffee has a pH of around 5. Since pH and pOH have an inverse relationship, black coffee has a pOH of ___.
Anon25 [30]

Answer:

pOH = 9.

Explanation:

The inverse relationship between the pH and pOH of any given solution can be written as:

pH = 14 - pOH

Or conversely:

pOH = 14 - pH

With the above information in mind we can <u>use the given pH to calculate the pOH</u>:

pOH = 14 - pH

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pOH = 9

Thus, black coffee has a pOH of 9.

5 0
3 years ago
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