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Levart [38]
2 years ago
5

Which of the following best describes the particles in an atom?

Chemistry
1 answer:
yanalaym [24]2 years ago
6 0

Answer:

Electrons move around a nucleus.

Explanation:

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Which of these household items is powered by alternating current?
AlladinOne [14]

Answer:

C. Hair dryer

Explanation:

Alternating Current

The other kind of electricity is called alternating current, or AC. Power plants produce this

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3 years ago
Volume increases, pressure stays the same, temperature
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Temperature decreases (?)
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The sum of the protons and neutrons in an atom is called the atomic number <br> True or False
olganol [36]
It is false, the atomic number is the number of protons and/or electrons in an atom on an element.
3 0
2 years ago
True or Flase: dissolving salt in distilled water creates a homogeneous mixture.
chubhunter [2.5K]

Answer:

true

Explanation:

7 0
3 years ago
Read 2 more answers
A chemist prepares a solution of sodium carbonate by measuring out of sodium carbonate into a volumetric flask and filling the f
Vadim26 [7]

Answer:

The correct answer will be "9.45\times 10^{-5} \ mol/L".

Explanation:

We have:

Moles of solute (Na₂Co₃) = 18.9 \mu \ mol

                                           = 18.9\times 10^{-6}

                               1 \mu \ mol = 10^{-6} \ mol

Now,

The volume of the solution will be:

⇒  0.200 \ L

∴ {1 \ mL=0.001 \ L}

The formula to find the concentration will be:

⇒  Concentration = \frac{moles \ of \ solute \ (mol)}{Volume \ of \ solution \ (L)}

On substituting the given values, we get

⇒                          =\frac{18.9\times 10^{-6}}{0.200}

⇒                          =9.45\times 10^{-5} \ mol/L

8 0
2 years ago
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