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olga_2 [115]
4 years ago
14

1. Calculate the work, w, gained or lost by the system when a gas expands from 15 L to 50 L against a constant external pressure

of 1.5 atm. (1 L • atm = 101 J)
2. Calculate the work, w, gained or lost by the system when a gas expands from 15 L to 50 L against a constant external pressure of 1.5 atm. (1 L • atm = 101 J +5.3 kJ -7.6 kJ +7.5 kJ -5.3 kJ)
Chemistry
1 answer:
Ira Lisetskai [31]4 years ago
5 0

Answer:

w = -3.8KJ

Explanation:

The work done on a system which is under an external pressure

P = w = - \int\limits^._. {p} \, dV \\w = - PΔV\\\\

P = 1.5 atm

ΔV = 40  − 15 = 25 L

w = - P ΔV = -1.5 (25) = - 37.5 L.atm

w = 37.5 X 101.325  J ≈ − 3800 J = −3.8 KJ

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nataly862011 [7]
In order: B, D, A, A, A. C, A
7 0
3 years ago
7. Draw the structures for the following hydrocarbons.HydrocarbonCyclohexane(C6H12)Cyclohexene(C6H10)StructureHydrocarbonBenzene
Alborosie

So,

Let's draw the structures for the following hydrocarbons:

Cyclohexane

We can draw it using the fact that it is a cycloalkane with six carbons:

Cyclohexene

It also contains six carbons with a hexagonal form, but the difference is that there's double bond on it:

Benzene

It has six carbons but there's an alternating double bond as follows:

Toluene

It has the same structure as benzene but it is bonded to a methyl group outside the benzene:

7 0
2 years ago
in the laboratory a student dilute 13.3 ml of a 10.8 m hcl solution to a total of 300.0 ml what is the concentration of the dilu
krek1111 [17]

<u>Answer:</u> The concentration of the diluted solution is 0.4788M

<u>Explanation:</u>

To calculate the concentration of the diluted solution, we use the following equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of HCl solution

M_2\text{ and }V_2 are the molarity and volume of the diluted HCl solution.

We are given:

M_1=10.8M\\V_1=13.3mL\\M_2=?M\\V_2=300mL

Putting values in above equation, we get:

10.8\times 13.3=M_2\times 300\\\\M_1=0.4788M

Hence, the concentration of the diluted solution is 0.4788M

6 0
3 years ago
What has more kinetic energy 10kg of bees flying at 10m/s or 10kg of birds flying at 10m/s? Why?
Sloan [31]
<h2>Answer:</h2>

Both of them will have same kinetic energy.

<h2>Explanation:</h2>
  • Kinetic energy is the energy of motion, every object in motion posses some kinetic energy.
  • Kinetic energy can be calculated by the given formula,

i.e,          K.E = 1/2 mv² .

Where, K.E is kinetic energy,

            m is mass of the object

            v is the velocity of the object

  • On observing the formula we can state that K.E is directly proportional to mass(m) and velocity(v) of the object.
  • Obviously, birds have more mass than bees but in question it has given 10 Kg of bees and 10 Kg of birds which means mass is same and also both of them are travelling with same velocity i.e 10m/s and hence both of them will have same kinetic energy(as both of the variables i.e m and v are same).

Result: Both bees and birds have same kinetic energy.

8 0
3 years ago
Why are elements classified?​
Yuki888 [10]

elements are classified to study their properties and similarities and differences between each other more aqurately

hope it helps...!!!!

8 0
2 years ago
Read 2 more answers
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