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Naddik [55]
3 years ago
9

Make sure to show your answer using correct units and sig figs. (all of the

Chemistry
1 answer:
allochka39001 [22]3 years ago
3 0

Answer:

1. 84g.mol`¹

2. 342g.mol`¹

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Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. What is the mass in grams of 385 mL of this liquid?
Makovka662 [10]
Cm^3 = mL

1.11 g/cm^3 = 1.11 g/mL

Density (g/mL) multiplied by volume (mL) will give us the mass (g)

1.11 g/mL * 385 mL = 427.35 g

And since we have 3 significant figures, we have 427. g.
6 0
3 years ago
Explain how compaction is important in the formation of coal.
olchik [2.2K]

Coal is being formed from decayed fossils and remains. These materials are smashed, "compacted" together until their chemicals merge together from the pressure of the compacting this is also how diamonds form from coal just more heat and more pressure. This process is called compaction. Without such, no coal will be present.


7 0
3 years ago
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When a solid is placed in a container and heat is applied, a phase change occurs. Watch the video and identify which of the foll
sesenic [268]

Answer:

Explanation:"Watch the video and identify which of the following statements are correct." Excuse no video

4 0
4 years ago
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A gas occupies 10.2 liters at 0.60 atm. What is the pressure if the volume becomes 3.0 L?
Arturiano [62]
P1V1 = P2V2
P1 = 0.60 atm
V1 = 10.2 L
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V2 = 3.0 L

Solve for P2 —> P2 = P1V1/V2 = (0.60 atm)(10.2 L) / (3.0 L) = 2.04 atm
3 0
3 years ago
The Earth's orbit is a(n) ___shape.<br> .
Stels [109]

Answer:

elliptical/ellipse

Explanation:

» <u>Concepts</u>

Astronomer <u>Johannes Kepler</u> discovered and founded his three laws of planetary motion. One of these laws states that the orbit of <u>all</u> planets, including Earth, is in an elliptical shape rather than a circle.

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