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emmasim [6.3K]
3 years ago
6

What would be the cost of running a 250 watt refrigerator for 24 hours if the cost of electricity is 8 cents per kilo-watt hour?

Chemistry
1 answer:
Katena32 [7]3 years ago
6 0
What question yall asker
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What can change depending on the number of protons in an atom?​
Rudiy27

Answer:

The element of the atom.

Explanation:

The number of protons confirms what element is the atom.

7 0
2 years ago
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How did agre use a simple osmosis experiment to prove the function of aquaporin?
ElenaW [278]
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3 years ago
Are the fragments all the same size or shape
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Hey there! I believe this statement is False. No two fragments are exactly the same size, and all fragments vary on the density of the material, the speed at which it broke off of the material, and the amount of it that hit the ground. Because of this, some people may say "Oh, this is the same size as this," but in reality, nothing is exactly the same size. At least, on a molecular level. So the statement above is false.

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7 0
3 years ago
a 20ml sample of hcl was titrated with the 0.0220 M Naoh. to reach the endpoint required 23.72 mL of the NaOh. Calculate the mol
Y_Kistochka [10]

Answer:

Molarity of HCl=0.026092M

Explanation:

The equation for the reaction is;

HCl + NaOH ⇒ NaCl + H2O

Using the formular, \frac{C_{A}V_{A}}{C_{B}V_{B} }=\frac{nA}{nB}    ..........equ1

whereC_{A} is the concentration of Acid,

          V_{A} is volume of acid

          C_{B} is concentration of the base

          V_{B} is volume of the base

          nA is the number of moles of Acid

          nB is number of moles of base

nA = 1,    nB=1 , V_{A}=20ml, C_{B}=0.022M, V_{B}=23.72mL

we will input these values into equation1 to solve for C_{A}

\frac{C_{A}*20}{0.022*23.72}=\frac{1}{1}

C_{A}*20=0.022*23.72

C_{A}=0.026092M

7 0
3 years ago
How many moles are in 4.6 x 10^19 atoms? <br><br> *#27 is the question
velikii [3]
There are 0.000076 moles in 4.6 x 10^19 atoms.
3 0
3 years ago
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