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tensa zangetsu [6.8K]
3 years ago
5

What is the formula for percent by mass in chem

Chemistry
1 answer:
ratelena [41]3 years ago
4 0

Answer:

mass percent = (mass of solute / mass of solution) x 100%

Explanation:

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If electricity cannot be destroyed or created then why do we got to pay for electricity?
icang [17]

Energy cannot be destroyed or created. Electricity is a form of energy which has to be created from other forms of energy. We have to pay for the creation of electricity because it requires certain resources to transform other energies into electricity.

5 0
2 years ago
When you put water in freezer the temperature of the water begins to decrease. what is the cause of this temperature decrease A
pashok25 [27]

Answer:

C, because it will then begin to become a solid but it will still be water but frozen so more like ice then.

6 0
2 years ago
I really need someone to explain how to find the average atomic mass.... the gizmos was really confusing because they also had w
evablogger [386]

Answer:

Option C. 52.057

Explanation:

The following data were obtained from the question:

Isotope >> Mass number > Percentage

A (Cr-50) > 50 >>>>>>>>>> 4.3

B (Cr-52) > 52 >>>>>>>>>> 83.8

C (Cr-53) > 53 >>>>>>>>>> 9.5

D (Cr-54) > 54 >>>>>>>>>> 2.4

Average atomic mass =?

The average atomic mass of chromium, Cr can be obtained as follow:

Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Atomic mass of Cr = [50×4.3)/100] + [52×83.8)/100] + [53×9.5)/100] + [54×2.4)/100]

= 2.15 + 43.576 + 5.035 + 1.296

Atomic mass of Cr = 52.057

Therefore, the atomic mass of chromium, Cr is 52.057

5 0
3 years ago
Corrosion may be regarded as the destruction of metal by:
NeX [460]
All of the above I think it might not be right
4 0
2 years ago
If water with a mass of 25.0 grams freezes in a closed system such as a closed glass jar, what is the mass of the formed ice aft
uranmaximum [27]
The mass would still be the same 25.0 g but the volume would be bigger
3 0
2 years ago
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