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Sergeu [11.5K]
4 years ago
10

I need help with these questions please ASAP!!!!!!!

Chemistry
1 answer:
yawa3891 [41]4 years ago
5 0

Answer:#1A #2T #3D #4A

Explanation:

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Which is the solubility product expression for pbcl2(s)
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The answer is [Pb^2+][Cl-]^2
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3 years ago
According to Newton’s Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because -
Andrej [43]

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for the force that sent the person forward, there is an equal force pushing back on the skateboard

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4 years ago
What is the atomic mass, in amu, of this atom?
hjlf

Answer:precisely 1/12 the mass of an atom of carbon-12.

Explanation:The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass.

7 0
3 years ago
What are the regions of the spectrum with wavelengths that can pass through the atmosphere called?
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Answer:

These regions of the spectrum with wavelengths that can pass through the atmosphere are referred to as "atmospheric windows." Some microwaves can even pass through clouds, which make them the best wavelength for transmitting satellite communication signals.

Explanation:

Hope this helps. Have a great rest of your day :)

4 0
3 years ago
2. If 1.204 X 1024 atoms of sodium is 20% of the total sodium atoms in sodium
GuDViN [60]

Answer:

584.2 g

Explanation:

Hello there!

In this case, since we know the 20% of the atoms correspond to sodium, we can compute the total atoms as shown below:

\frac{1.204 x10^{24}}{0.2}=6.02x10^{24}atoms

Which are also equal to 1 mol and the Avogadro's number of sodium chloride with a molar mass of 58.44 g/mol; thus, the grams of salt turn out to be:

6.02x10^{24}atoms*\frac{1mol}{6.022x10^{23}atoms} *\frac{58.44g}{1mol}\\\\=584.2g

Best regards!

3 0
3 years ago
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