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3 years ago

12

Object is placed on a triple beam balance, and a student moves the sliders until it is balanced with the pointer resting at the

zero mark. When the pointer is resting, these are the positions of the sliders:
What is the mass of the object?

340.9 g
493.9 g
439.0 g
934.1 g

2 answers:

Ksivusya [100]3 years ago

7 0

The answer to this question is a

Sveta_85 [38]3 years ago

4 0

The answer is A I hope this helps :)

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1 year ago

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3 years ago

A gas is heated from 263.0 K to 298.0 K and the volume is increased from 24.0 liters to 35.0 liters by moving a large piston wit

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Answer:

The final pressure is approximately 0.78 atm

Explanation:

The original temperature of the gas, T₁ = 263.0 K

The final temperature of the gas, T₂ = 298.0 K

The original volume of the gas, V₁ = 24.0 liters

The final volume of the gas, V₂ = 35.0 liters

The original pressure of the gas, P₁ = 1.00 atm

Let P₂ represent the final pressure, we get;

$\dfrac{P_1 \cdot V_1}{T_1} = \dfrac{P_2 \cdot V_2}{T_2}$

$P_2 = \dfrac{P_1 \cdot V_1 \cdot T_2}{T_1 \cdot V_2}$

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∴ The final pressure P₂ ≈ 0.78 atm.

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3 years ago