3 years ago

The atomic number of a nucleus is the number of:

Chemistry

2 answers:

N76 [4]3 years ago

8 0

Electrons might be the answer

Lelechka [254]3 years ago

8 0

I think Electrons I’m not so sure though

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What volume would 56.2 mL of gas at 820 mm of Hg occupy at 720 mm of Hg?

Andreyy89

Answer:

49.35 mL

Explanation:

Given: 56.2 mL of gas

To find: volume that 56.2 mL of gas at 820 mm of Hg would occupy at 720 mm of Hg

Solution:

At 820 mm of Hg, volume of gas is 56.2 mL

At 1 mm of Hg, volume of gas is $\frac{56.2}{820}$

At 720 mm of Hg, volume of gas is $\frac{56.2}{820}(720)=49.35\,\,mL$

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3 years ago

Which of the following has the highest pH?

Tema [17]

Answer:

Explanation:

pH=-log(x)

x=0.001M,pH=3

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x=0.1M,pH=1

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Highest pH is for option D

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Explanation:

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Nadusha1986 [10]

Answer:

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These metals have a single electron in the outer shell

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Which of the following is the correct name for the compound HF?

alexira [117]

Name for the compound HF is Hydrogen fluoride.
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