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earnstyle [38]
3 years ago
15

Describe a process in which energy changes form at least two times explain how the law of conservation of energy applies to the

process you describe

Chemistry
1 answer:
Dmitry_Shevchenko [17]3 years ago
5 0
A pendulum.  Hold it high and it has potential energy but no kinetic energy because it is still.  As it moves down when you drop it, it changes to kinetic energy and moves faster and faster until it's at the bottom where it has no potential energy.  However, it still has momentum, so now it is changed to potential energy as it moves up the other side
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A gas exerts a pressure of 0.62 atm. Convert this to kPa and mmHg. Be sure to show your work.
IRINA_888 [86]

Answer:

The answer to your question is 0.62 atm = 62.82 kPa = 471.2 mmHg

Explanation:

Data

P = 0.62 atm

P = ? kPa

P = ? mmHg

Process

1.- Look for the conversion factor of atm to kPa and mmHg

 1 atm = 101.325 kPa

1 atm = 760 mmHg

2.- Do the conversions

                  1 atm ----------------- 101.325 kPa

                  0.62 atm ------------  x

                   x = (0,62 x 101.325) / 1

                  x = 62.82 kPa

                   1 atm ------------------ 760 mmHg

                   0.62 atm ------------  x

                   x = (0.62 x 760)/1

                   x = 471.2 mmHg                

4 0
3 years ago
A certain weak acid, ha, has a ka value of 6.0×10−7. calculate the percent ionization of ha in a 0.10 m solution.
joja [24]
For the purpose, we will use the equation for determining the dissociation constant from concentration and <span>percent of ionization:

Kd = c </span>× α²

α = √(Kd/c) × 100%

Kd = 6.0×10⁻⁷

c(HA) = 0.1M

α = √(6.0×10⁻⁷/0.1)  × 100% =  0.23%

So, in the solution, the acid <span>percent of ionization will be just 0.23%.</span>

5 0
3 years ago
What is the simplest aromatic compound?<br> toluene<br> benzene<br> cyclohexane<br> cyclopropane
pav-90 [236]
It’s Benzene, I do believe :) hope this helped, good luck!
3 0
3 years ago
Measure the mass of a truckful of grain, use:
Nimfa-mama [501]

Answer:

tons

Explanation:

8 0
3 years ago
Read 2 more answers
Chemical weathering takes place fastest in a _______ and _________ climate​
ser-zykov [4K]
Possibly wet and unstable
3 0
3 years ago
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