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cestrela7 [59]
3 years ago
9

Which equation shows a conservation of mass?

Chemistry
1 answer:
pychu [463]3 years ago
8 0
(4) PCl5--> PCl3+ Cl2 is the correct answer because we both have 1 P atom and 5 Cl atoms on both sides, and thus the masses of the elements don't change.
Hope this would help~
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Why do you think the molarity relationship is so important to the chemist?
Oksana_A [137]

There are two big advantages of using molarity to express concentration. The first advantage is that it's easy and convenient to use because the solute may be measured in grams, converted into moles, and mixed with a volume.


The second advantage is that the sum of the molar concentrations is the total molar concentration. This permits calculations of density and ionic strength

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2 years ago
Determine the mass of 2.75 moles of CaSO4. Record your work and your answer.
maw [93]

Explanation:

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Maurinko [17]
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What are the units of k in the following rate law?
Ludmilka [50]

Answer:

B. \frac{1}{M^{2} s }

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You can also use this predetermined formula to solve this problem faster: k= \frac{M^{1-n} }{s }

Where n is the number of molecule. There are 3 molecule(2X and 1Y) so n=3, so

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