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zalisa [80]
3 years ago
14

What two quantities must be known to calculate the density of a sample of matter?

Chemistry
2 answers:
Tanya [424]3 years ago
7 0
The answer is A, mass and volume.

The equation for density, <span>ρ,</span> is ρ = m/V. m is mass and V is volume.
Mkey [24]3 years ago
6 0

Answer:

remember the formula for density:

d = \frac{m}{v}

where d is density, m is mass, and v is volume.

Therefore, B. mass and volume is needed to determine the density

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3 years ago
This is the chemical formula for acetone: CH32CO. Calculate the mass percent of carbon in acetone.
olga_2 [115]

Answer:

62.07 %

Explanation:

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Mass of H = 1 g/mol

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6 0
3 years ago
Sharon puts a large pot of water on the stove to boil pasta. Then she starts to make a tomato sauce. When the sauce is cooking,
Vadim26 [7]

Answer:

1. A

2. C

Explanation:

For the first question, we know that the water transformed into a gas. This fact eliminates choices C and D, primarily because they describe the change as "gas to liquid" instead of liquid to gas.

What separates B from A is that B is saying the liquid changed to a gas in response to sunlight, which is completely false and impertinent to the prompt.

A is the correct answer.

for the second question, we know that condensation causes clouds -- and that neither evaporation nor water vapor would clear clouds to make more of them, which eliminates choices B and D. Going back to condensation, the accumulation of water vapor plays a big role in the formation of clouds. While evaporation does play a part in [it] as well, condensation is what caused the sudden appearance of clouds in the troposphere.

C is the correct answer.

5 0
3 years ago
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