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3 years ago

Amy throws a softball through the air. What are the different forces acting on the ball while it’s in the air?

2 answers:

8 0

There’s quite a lot, one is gravity (or weight) which is the downward force, one is drag, which is the sideways force, and the last one is lift, which is the upwards force. Hope this helps!

vesna_86 [32]3 years ago

3 0

Answer:

Gravitational force

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Explanation:

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3 years ago

How many moles of methanol are required to produce 4.19 moles of water

Harrizon [31]

Explanation:

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3 years ago

Liquids are not easily compressible but flow easily.<br> O True<br> O False

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3 years ago

The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (s

Mrac [35]

Answer:

Mass of hydrogen gas evolved is 0.0749 grams.

Explanation:

Total pressure of the gases = p = 758 mmHg

Vapor pressure of water = 23.78 mmHg

Pressure of hydrogen gas ,P = p - 23.78 mmHg = 758 mmHg - 23.78 mmHg

P = 734.22 mmHg = $\frac{734.22}{760} atm=0.966 atm$

Temperature of of hydrogen gas ,T= 25°C =298.15 K

Volume of hydrogen gas = V = 0.949 L

Moles of hydrogen gas =n

PV = nRT (Ideal gas equation )

$n=\frac{PV}{RT}=\frac{0.966 atm\times 0.949 L}{0.0821 atm L/mol K\times 298.15 K}$

n = 0.03745 mol

Moles of hydrogen gas = 0.03745 mol

Mass of 0.03745 moles of hydrogen gas = 0.03745 mol × 2 g/mol = 0.0749 g

Mass of hydrogen gas evolved is 0.0749 grams.

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3 years ago

Which of these subatomic particles adds the most mass to an atom?

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