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Doss [256]
2 years ago
10

Short Answer/Essay

Chemistry
2 answers:
Scilla [17]2 years ago
5 0

Answer:

lol global warming is the gradual increase in the temperature of the earth and its atmosphere. this is do to the greenhouse effect caused by increased levels of carbon dioxide.

Explanation:

common knowledge

uranmaximum [27]2 years ago
3 0

Global warming is warming to the earth people can stop littering to help it
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Explain Boyle's & Charles's law.
Step2247 [10]
Boyle's law is an experimental gas law that describe how the pressure of a gas tends to increase as the volume of the container decreases

Charles's law is also an experimental gas that describes how gases tend to expand when heated
5 0
2 years ago
Potassium thiocyanate, KSCN, is often used to detect the presence of Fe3+ ions in solution through the formation of the red Fe(H
Natalija [7]

Answer:

Ferric ions left in the solution at equilibrium is 8.0\times 10^{-6} M.

Explanation:

Moles of ferric nitrate in 0.700 L = n

Volume of the solution = V = 0.700 L

Molarity of ferric nitrate = M = 0.00150 M

n=M\times V=0.00150 M\times 0.700 L=0.00105 mol

Moles of potassium thiocyanate in 0.700 L = n'

Volume of the potassium thiocyanate solution = V' = 0.700 L

Molarity of potassium thiocyanate = M' = 0.200 M

n'=M'\times V'=0.200 M\times 0.700 L=0.140 mol

Molarity of ferric ions after mixing :

1 mol of ferric nitrate gives 1 mol of ferric ions.Then 0.00105 mol ferric nitrate will :

Moles of ferric ions = 0.00105 mol

M_1=\frac{0.00105 mol}{0.700 L+0.700 L}=0.00075 M

Molarity of  thiocyanate ions after mixing :

1 mol of potassium thiocyanate gives 1 mol of thiocyanate ions.Then 0.140 mol potassium thiocyanate will give:

Moles of thiocyanate ions = 0.140 mol

M_2=\frac{0.140 mol}{0.700 L+0.700 L}=0.1 M

Complex equation:

          Fe^{3+}+SCN^-\rightleftharpoons [Fe(SCN)]^{2+}

0.00075 M         0.1 M                        0

At equilibrium:

(0.00075 M -x)    (0.1 M-x)                  x

The formation constant of the given complex =K_f=8.9\times 10^2

K_f=\frac{[[Fe(SCN)]^{2+}]}{[[Fe^{3+}]][SCN^{-}]}

8.9\times 10^2=\frac{x}{(0.00075 M -x)\times (0.1 M-x)}

Solving for x:

x = 0.000742 M

Ferric ions left in the solution at equilibrium :

= (0.00075 M -x) = (0.00075 M - 0.000742 M)= 8.0\times 10^{-6} M

5 0
3 years ago
What is a cholesterol level of 1.85 g/l in the standard units of mg/dl?
sp2606 [1]

Cholesterol is  a sterol, it is a type of lipid molecule, and is biosynthesized by all animal cells. Total cholesterol level lesser than 200 milligrams per deciliter (mg/dL) is considered desirable for an adult. The standard unit used for any substance is gram per liter. However sometimes the concentration can also be expressed in terms of mg per deciliter. In this context 1 gram per liter is equal to 100 milligram per deciliter.

Thus 1.85 gram per liter is equal to 185 mg per deciliter. So 1.85 g/L is equivalent to 185mg per deciliter.

8 0
2 years ago
Read 2 more answers
I cant seem to figure out ANY of these... help when you can pls :.)
Nonamiya [84]
The first one is some reaction with water even I am studying the same
7 0
3 years ago
What type of solution is formed when steam from boiling water evaporates into the air
Hoochie [10]
That specific kind is called gas.

When you put water in a freezing temprature it becomes solid.
When you boil water it becomes gas
7 0
3 years ago
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