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Anna71 [15]
2 years ago
13

A storm is

Chemistry
2 answers:
skad [1K]2 years ago
5 0

Answer:

c. Boundary where air masses meet and cold air rises above warm air.

Explanation:

miv72 [106K]2 years ago
3 0
The answer of this question is C
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How many valence electrons would atoms of the element boron have?
vagabundo [1.1K]

Answer:

3 valence electrons

Explanation:

Atoms of Boron have 3 valence electrons

8 0
2 years ago
Nickel has chemical symbol Ni and the atomic 28. How many protons,neutrons,and electronic would be found in an atom of nickel-78
ira [324]
In nickel-78, there are 28 protons, 28 electrons, and 50 neutrons.

The protons is always the atomic number.
The electron would always be the atomic number when it's a neutral atom. (Different for isotopes)
The neutrons is always the number that makes up the mass with protons. You can figure it out by subtracting atomic mass by protons. (78-28 = 50)
8 0
3 years ago
Read 2 more answers
What happens to the average kinetic energy of the particles in a sample of matter as the temperature of the sample is increased?
antiseptic1488 [7]

Answer:

  • <em>As the temperature of a sample of matter is increased, the average kinetic energy of the particles in the sample </em><u>increase</u><em>.</em>

Explanation:

The <em>temperature</em> of a substance is the measure of the <em>average kinetic energy </em>of its partilces.

The temperature, i.e. how hot or cold is a substance, is the result of the collisions of the particles (atoms or molecules) of matter.

The kinetic theory of gases states that, if the temperature is the same, the average kinetic energy of any gas is the same, regardless the gas and other conditions.

This equation expresses it:

  • Avg KE = (3/2) (R / N) T

Where Avg KE is the average kinetic energy, R is the universal constant of gases, N is Avogadro's constnat, and T is the temperature measure in absolute scale (Kelvin).

As you see, in that equation Avg KE is propotional to T, which means that as the temperature is increased, the average kinetic energy increases.

7 0
3 years ago
True or false elements in the same colum have simular properties
AlexFokin [52]
True since ithave same number of electrons and protons
3 0
3 years ago
How many moles are in 10 mg of NO2
podryga [215]

mole=10 x 10⁻³ : 46 g/mol = 2.17 x 10⁻⁴

4 0
2 years ago
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