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3 years ago

Which statement best describes how chemical equations demonstrate conservation of mass?

SAT

1 answer:

scoray [572]3 years ago

3 0

Answer:

Explanation:

Let's just get the answer and then show why the others are wrong.

The answer is C.

The number of reactants and Products need not be the same

C3H8 + 5O2 ===> 3CO2 + 4H2O

The reactants = 1 + 5 = 6

The products = 3 + 4 = 7

So A is incorrect.

================

B is saying that

C3H8 + 5O2 ===> C3H8 + 5O2

The answer is obviously not B

======================

C8H18(l) + O2(g) ==> CO2(g) + H2O(g) unbalanced

Gasoline is a liquid. All the rest are gases. D is wrong.

=================

C is correct

The left side has

3 Cs

8 Hs

and 10 Os

The right side has

3Cs

8Hs

10 Os

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<h3>Total cash collected</h3>

First step

Total Credit Sales in December= $50,000/40%

Total Credit Sales in December= $125,000

Second step

Total cash collected during January = Cash sales of January + (60% x Credit sales of January) + (30% x Credit sales of December)+ Uncollected November sales

Let plug in the formula

Total cash collected during January = $70,000 + (60% x $340,000) + (30% x $125,000) + $20,000

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2 years ago

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2 years ago

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∴

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