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Kisachek [45]
3 years ago
9

Which of the following is the balanced equation

Chemistry
1 answer:
Katena32 [7]3 years ago
5 0

Answer:

D

Explanation:

2H202 = 2H2O + O2

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A cylinder with a moving piston expands from an initial volume of 0.350 L against an external pressure of 1.90 atm. The expansio
myrzilka [38]

Answer:

1.84 L

Explanation:

Using the equation for reversible work:

W = -P*(V_{2} - V_{1})

Where:

W is the work done (J) = -287 J.

Since the gas did work, therefore W is negative.

P is the pressure in atm = 1.90 atm.

However, work done is in joules and pressure is in atm. We can use the values of universal gas constant as a convenient conversion unit. R = 8.314 J/(mol*K);  R = 0.0821 (L*atm)/(mol*K)

Therefore, the conversion unit is 0.0821/8.314 = 0.00987 (L*atm)/J

V_{1} is the initial volume = 0.350 L

V_{2} is the final volume = ?

Thus:

(-287 J)*0.00987 (L*atm)/J = -1.9 atm*(V_{2} - 0.350) L

V_{2} = [(287*0.00987)+(1.9*0.350)]/1.9 = (2.833+0.665)/1.9 =1.84 L

7 0
3 years ago
Please help me with this friends.​
Radda [10]
Where is the picture to this?
3 0
3 years ago
Which ones react with water?
slavikrds [6]

Answer:

I think its the last one

Explanation:

its supposed to be H 2 O 2.

8 0
2 years ago
John recently purchased a High Definition plasma television and needed to have it installed. The installers told John that for t
ioda
Ductility - a materials ability to stretch, ie if you pull it apart does it stretch to a wire.

density - ratio of volume to mass

conductivity - materials ability to conduct a current.

hopefully with these definitions you can figure out the answer.
8 0
3 years ago
Read 2 more answers
HURRY IT'S URGENT!!!
Nady [450]

Answer:

convection

Explanation:

as air is heated, it rises up and away from the heat source, cools then falls closer to the heat source over and over again.

6 0
2 years ago
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