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elena-s [515]
4 years ago
9

True or False.

Chemistry
1 answer:
ANEK [815]4 years ago
7 0
1(False)
2(True)
3(False)
4(True)
5(True)
6(True)
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Chris noticed a high-pressure system in the weather forecast for Monday
Alchen [17]

Answer:

A. Clear and Sunny

Explanation:

The answer would be A. Clear and Sunny. A high pressure system occurs where the air mass above the Earth is denser than in surrounding areas, and therefore exerts a higher force or pressure. They usually happen with li9ght winds. Using process of elimination, it could not be D. Warm and Stormy, C. Cloudy and Rainy, or B. Cold and Stormy because all have wet climates.

5 0
2 years ago
You have 56.8 mL of a gas collected at 664 mmHg and 135 K. What volume will it occupy at 632 mmHg and 196 K? *
tensa zangetsu [6.8K]

Answer:

86.6 mL

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 56.8 mL

Initial pressure (P₁) = 664 mmHg

Initial temperature (T₁) = 135 K

Final pressure (P₂) = 632 mmHg

Final temperature (T₂) = 196 K

Final volume (V₂) =?

The final volume of the gas can be obtained as follow:

P₁V₁/T₁ = P₂V₂/T₂

664 × 56.8 / 135 = 632 × V₂ / 196

Cross multiply

135 × 632 × V₂ = 664 × 56.8 × 196

85320 × V₂ = 7392179.2

Divide both side by 85320

V₂ = 7392179.2 / 85320

V₂ = 86.6 mL

Therefore, the final volume of the gas is 86.6 mL

5 0
3 years ago
The _____ number is a positive or negative number assigned to an atom according to a set of arbitrary rules.
sergeinik [125]

I think it is oxidation number

5 0
3 years ago
What property do all of the group 18 elements have that makes them stand out from other elements?
vredina [299]
The are noble gases. They are all odorless, colorless, and are used to make neon lights.
4 0
3 years ago
Which of the following best explains the trend in ionization energy across a period?
Alina [70]

A) It decreases because the distance between the nucleus and outermost shell increases

4 0
3 years ago
Read 2 more answers
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