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3 years ago

Primordial swamps decomposing under ancient seas and tons of rock layers gave rise to an important fuel used today. That fuel is

Chemistry

2 answers:

motikmotik3 years ago

8 0

I believe the correct answer is C. Coal. It is used to make tons of things in the world. I hope this helps :)

nata0808 [166]3 years ago

6 0

C) coal

I had this question and it was c

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In a solution, the solute is the substance in the smaller amount. True False

blondinia [14]

The substance that is in the smaller amount is the solute. so yes, the answer is true.

6 0

3 years ago

Read 2 more answers

A sample of oxygen gas occupies 3.60 liters at a pressure of 1.00 atm. If the temperature is held constant, what will be the vol

zzz [600]

<h3>Answer;</h3>

= 1.44 L

<h3>Explanation;</h3>

Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to its pressure at a constant temperature.

Mathematically;

P α 1/V

PV =constant 

Thus, P1V1 = P2V2 

P1 = 1.00 atm, V1 = 3.60 liters, V2 = ?, P2 = 2.50 atm

V2 = P1V1/P2

 = (1× 3.6)/2.5 

 = 1.44 L

7 0

3 years ago

is it true heat is energy transfer that reduces the amount of kinetic energy of a substances particle

Cloud [144]

Answer:

false

Explanation:

heat expands and makes the particles faster.

4 0

4 years ago

An ideal gas described by Ti=291K, Pi=1.50bar, and Vi=13.3L is heated at constant volume until P=15.0bar. It then undergoes a re

Salsk061 [2.6K]

Answer:

$W=-4601.4J$

Explanation:

Hello,

In this case, the steps are:

$291K,1.50bar, 13.3L \rightarrow 15.0bar 13.3L,T_2\rightarrow T_2, V_2, 1.50bar\rightarrow 291K,1.50bar, 13.3L$

In such a way, the work per mole (w) for that isothermal process turns out:

$w=RTln(\frac{P_1}{P_2} )=8.314\frac{J}{mol*K}*291K*\frac{1.50bar}{15.0bar} \\\\w=-5570.8\frac{J}{mol}$

In addition, if the moles are required, since it is an ideal gas:

$n=\frac{PV}{RT}=\frac{1.50bar*13.3L}{0.083\frac{bar*L}{mol*K}*291K} =0.826mol$

So the work is:

$W=-5570.8\frac{J}{mol} *0.826mol=-4601.4J$

Best regards.

8 0

3 years ago

-4x + 5 + x + 4 = 36 in a model

Alexeev081 [22]

Answer:

-9

Explanation:

-3x=36-9

3x = -27

x = -9

3 0

4 years ago