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Fudgin [204]
3 years ago
14

Please help I am timed

Chemistry
1 answer:
Nookie1986 [14]3 years ago
8 0

Answer:

coal and oil come from the remains of dead animals.

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Why is acid added to water during eletrolysis
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3 years ago
The law of conservation of mass says that *
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8 0
3 years ago
If the density of a 45.0 cm3 block of wood is 0.65 g/ml what is the mass of the wood?
wlad13 [49]

Answer:

\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.

d*v=\frac{m}{v}*v

d*v=m

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.

  • A cubic centimeter is equal to a milliliter.
  • Therefore, 45 cubic centimeters also equals 45 milliliters.

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

Substitute the values into the formula.

0.65 \ g/mL * 45 \ mL=m

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

0.65 \ g * 45=m

29.25 \ g=m

The mass of the wood is 29.25 grams.

5 0
4 years ago
Can anyone please help me????
olya-2409 [2.1K]

Answer:

I THINK IT MIGHT BE C

Explanation:

7 0
3 years ago
Read 2 more answers
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