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nika2105 [10]
2 years ago
14

I need help if anyone will help plz

Chemistry
1 answer:
maksim [4K]2 years ago
7 0

Answer:

D

Explanation:

If you look at the problem, and the coefficients (the little numbers on the bottom) you will see that on the reactant side you get a total of 11, you look over to the product side and you also get a total of 11.

B. is wrong because they’re are the same amounts

C.is wrong because they have the same amount of carbon

D. Now similar to B but slightly different the matter is the reactant side I’m pretty sure is equal to the amount on the product side.

If I had to take a strong guess though I would choose D just because the question is asking for the one that shows The law of conservation of mass. Pls make me brainlist

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If the density of a 45.0 cm3 block of wood is 0.65 g/ml what is the mass of the wood?
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\boxed {\tt mass=29.25 \ grams}

Explanation:

The density formula is mass over volume.

d=\frac{m}{v}

Rearrange the formula for the mass, m. Multiply both sides of the formula by v.

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Mass can be found by multiplying the density and volume. The density is 0.65 grams per milliliter and the volume is 45.0 cubic centimeters.

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d= 0.65 \ g/mL\\v= 45 \ mL

Substitute the values into the formula.

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Multiply. Note the milliliters, or mL will cancel out.

0.65 \ g * 45=m

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