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DerKrebs [107]
3 years ago
8

Can someone help me with this question?​

Chemistry
1 answer:
Rainbow [258]3 years ago
5 0

Answer:

I think the answer is h

Explanation:

when you let the balloon go, all the air the is inside comes out causing it to move forard

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A sample of gas occupies a volume of 61.5 mL . As it expands, it does 130.1 J of work on its surroundings at a constant pressure
Lesechka [4]

Answer:

the final volume of the gas is V_2 = 1311.5 mL

Explanation:

Given that:

a sample gas has an initial volume of 61.5 mL

The workdone = 130.1 J

Pressure = 783 torr

The objective is to determine the final volume of the gas.

Since the process does 130.1 J of work on its surroundings at a constant pressure of 783 Torr. Then, the pressure is external.

Converting the external pressure to atm ; we have

External Pressure P_{ext}:

P_{ext} = 783 \ torr \times \dfrac{1 \ atm}{760 \ torr}

P_{ext} = 1.03 \ atm

The workdone W = P_{ext}V

The change in volume ΔV= \dfrac{W}{P_{ext}}

ΔV = \dfrac{130.1 \ J  \times \dfrac{1 \ L  \ atm}{ 101.325 \ J}  }{1.03 \ atm }

ΔV = \dfrac{1.28398717 }{1.03  }

ΔV = 1.25 L

ΔV = 1250 mL

Recall that the initial  volume = 61.5 mL

The change in volume V is \Delta V = V_2 -V_1

-  V_2= -  \Delta V  -V_1

multiply through by (-), we have:

V_2=   \Delta V+V_1

V_2 =  1250 mL + 61.5 mL

V_2 = 1311.5 mL

∴ the final volume of the gas is V_2 = 1311.5 mL

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In the front of the room, there is a bottle that contains a 32.00 g sample of sulfur. This is
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6.02x10^23 atoms is the answer
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A photon has a wavelength of 750 no. What is the energy in joules
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750

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750

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What is the IUPAC name Of<br> CH3-CH2-CH2-CH=O<br> I<br> COOH
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Explanation:

It is Butanoic Acid

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NEED HELP QUICKLY!!! How many moles are in each of the following?
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Answer: a. 0.26mol

b. 0.000479mol

c. 1.12mol

Explanation: Please see attachment for explanation

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3 years ago
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