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Harlamova29_29 [7]
3 years ago
12

What is the atomic number of this atom?

Chemistry
2 answers:
PIT_PIT [208]3 years ago
6 0

Answer:

2?????

Explanation:

Elodia [21]3 years ago
4 0
The atomic number is b
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it contains 11 electrons

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3 years ago
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What is true about the speed of molecules in a sample of gas held at a constant temperature?
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Calculate the pressure of 2 mol of a gas at 300 K in 8 L container.
Sergio039 [100]

Answer:

4800

Explanation:

using my Cal ex to solve the question

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2*300*8=4800

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3 years ago
What is the density of a substance that weighs 340g and has a volume of 40cm3?
jeka94

Answer:

<h2>8.5 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{340}{40}  =  \frac{17}{2}  \\

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<h3>8.5 g/cm³</h3>

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5 0
3 years ago
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