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pantera1 [17]
2 years ago
11

PLEASE HELP

Chemistry
2 answers:
saveliy_v [14]2 years ago
8 0

If it's not preservation then it's it's reservation.

victus00 [196]2 years ago
7 0

Answer:

A restoration

Explanation:

the action of returning something to a former owner, place, or condition.

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Equation for the for formation of ethanoic acid<br>​
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3 years ago
What describes the current model of an atom​
vladimir2022 [97]

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A tiny sense positively charge core called a nucleus in which nearly all the mass is concentratedm

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3 years ago
A solution is prepared by dissolving 23.7 g of cacl2 in 375 g of water. the density of the resulting solution is 1.05 g/ml. the
alekssr [168]
<span>The density of the solution =1.05 g/ml.
</span><span>The total mass of the resulting solution is = 398.7 g (CaCl2 + water)
</span>
Find moles of CaCl2 and water.
Molar mass of CaCl2 = 110 (approx.)

Moles of CaCl2 = 23.7 / 110  = 0.22
so, moles of Cl- ion = 2 x 0.22 = 0.44  (because each molecule of CaCl2 will give two Cl- ions)
Moles of water = 375 / 18 = 20.83

Now, Mole fraction of CaCl2 =  (moles of CaCl2) / (total moles)

total moles = moles of Cl- ions + moles of Ca2+ ions + moles of water

                  = 0.44 + 0.22 + 20.83

=21.49


So, mole fraction = 0.44 / (21.49) = 0.02

Guess what !!! density is not used. No need

4 0
3 years ago
Read 2 more answers
Are there more metals or nonmetals on the periodic table?
bogdanovich [222]

Answer:yes

Explanation:

I think so

6 0
4 years ago
Read 2 more answers
Which atom would it be most difficult to remove an electron from
Norma-Jean [14]
I would be difficult to remove an electron from a Noble or Inert Gas (also known as the group 8 or 0 elements).  This is because they all have filled outermost shells and as such the outermost shell would be held tightly to the nucleus and as such make it difficult to remove.  Examples Helium, Neon, Argon, Xenon, Krypton and Radon 
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