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3 years ago

What is a chemical energy

Chemistry

1 answer:

Citrus2011 [14]3 years ago

7 0

Consider a battery that uses chemicals to produce energy

Chemical energy. A liquid substance that produces energy.

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A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the vol

Marat540 [252]

Answer:

21.19 L or 5.6 gallons

Explanation:

Data Given

initial volume V1 = 4.50 gallons

convert volume from gallons to L

1 gallon = 3.78541 L

4. 50 gallon = 3.785 L x 4.50

So,

initial volume V1 = 17.03 L

final Volume V2 = ?

initial Temperature T1 = 80° F

convert Temperature to Kelvin

T1 = ( 80° F -32) / 1.8 +273

T1 = 26.7° C + 273 = 299.7 K

final Temperature T2 = 100° C

convert Temperature to Kelvin

T2 = 100° C + 273 = 373 K

Solution:

This problem will be solved by using charles' law equation at constant pressure.

The formula used

V1 / T1 = V2 / T2

As we have to find out volume, so rearrange the above equation

V2 = V1 x T2 / T1

Put value from the data given and conversion information in above equation

V2 = 17.03 L x 373 K / 299.7 K

V2 = 21. 19 L

So the final volume of Methane gas = 21.19 L

Or for Volume in gallons

1 L = 0.26

21.19 x 0.264 = 5.6 gallons

7 0

2 years ago

What is percent composition of carbon in c2h6o3

zubka84 [21]

the percentage composition of carbon is 30.77%

5 0

3 years ago

How many liters are in 35 g of CO2?

aleksley [76]

Answer:

1.977 grams

At one atmosphere and 0 degrees C, the density of CO2 gas is 1.977 grams per liter. Multiply the volume, in liters, by 1.977 to get the number of grams of CO2.

Explanation:

i hope this may help

5 0

2 years ago

Which of the following does not describe elements?

postnew [5]

The statement that does not describe elements would be that they can be separated by a chemical reaction. This is not the case, an element is a pure substance that can't be degraded into any other constituent that would form it. They are building blocks composed by atoms.

6 0

3 years ago

Read 2 more answers

The gas arsine, AsH3, decomposes as follows: In an experiment at a certain temperature, pure AsH3(g) was placed in an empty, rig

bazaltina [42]

The equilibrium pressure of $H_{2}$ is 288 torr. and $K_{p}$ for this reaction is 0.786 atm.

from the reaction:- $2AsH_{3}$ ⇄ $2As + 3H_{2}$

initial concentration 392 torr. 0

at equilibrium. 392 - $2x$ . $3x$

and the final pressure in the flask = 488 torr.

Hence,

$( 392 - 2x ) + 3x = 488\\ x = 488-392\\x = 96 torr.$

The partial pressure of $H_{2}$ is 3 × 96 = 288 torr.

and $AsH_{3}$ is 392 - ( 2 × 96 ) = 392 - 192 = 200 torr.

Now, to find $K_{p}$ for this reaction, we will use $K_{p} = \frac{(P_{H_{2} })^{2} }{( P_{AsH_{3} } )^{2}}$

putting all the values, we get,

$K_{p} = \frac{(288)^{3} }{(200)^{2} }$

= 597.1968 torr.

= 0.786 atm. ( 1 atm = 760 torr. )

what do you mean by equilibrium?

Equilibrium in chemistry is the phase that exists when a chemical reaction and its opposite reaction happen at the same rates. This word's Latin origin dates back to the prefix aequi-, which means equal, and lbra, that indicates scale or balance.

Learn more about equilibrium reaction here:-

brainly.com/question/15118952

#SPJ4

3 0

1 year ago