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Brilliant_brown [7]
3 years ago
7

The atomic number of magnesium is 12 this is also the number of which of the following

Chemistry
1 answer:
frozen [14]3 years ago
4 0
The atomic number represents the number of protons present in an atom.Therefore,the answer is B.
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Add a constant temperature when the volume of the gas is decreased what happens to its pressure
Margaret [11]

Answer:

<h2>Pressure will increase</h2>

Explanation:

At a constant temperature, the pressure of gas will increase proportional to the decrease in volume of the gas.

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8 0
2 years ago
The hydrogen-line emission spectrum includes a line at a wavelength of 434 nm. What is the energy of this radiation? (h= 6.626 x
Andrews [41]
Wavelength = 434nm = 434 x 10⁻⁹m
planck's constant = <span>h= 6.626 x 10 ⁻³⁴ J
E =?
by using the formula;
E = hc /</span>λ
value for c is 3 x 10⁸ m/s
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6 0
3 years ago
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anzhelika [568]

Answer:

Would you consider adding a sodium carbonate solution to a magnesium sulfate .

Explanation:

??

5 0
2 years ago
Which of these statements best describes the relationship between elements, compounds, and pure substances?
olchik [2.2K]

pure substances can be divided into two groups; elements and compounds

5 0
3 years ago
Read 2 more answers
Pbo.....<br>= 2Pb +......​
Colt1911 [192]

Answer:

It's

Explanation:

Pbo + c

= pb + co2

While balancing it becomes

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(I was also doing same qn)

7 0
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