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Sidana [21]
3 years ago
10

John pushes a 10 pound box 5 feet. How much work is done?

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

Answer:

50 I think not 100% sure

Explanation:

Because you just do 10*5 which equals 50.

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5. Which are forms of energy? Select all that apply.
notsponge [240]

Answer:

Chemical

Explanation:

e

5 0
3 years ago
Read 2 more answers
A quantity of 0.0250 mol of a gas initially at 0.050 L and 19.0°C undergoes a constant-temperature expansion against a constant
KiRa [710]

Answer:

V_2=2.995L\\\\W=248.5J

Explanation:

Hello,

In this case, for us to compute the final volume we apply the Boyle's law that analyzes the pressure-volume temperature as an inversely proportional relationship:

P_1V_1=P_2V_2

So we solve for V_2 by firstly computing the initial pressure:

P_1=\frac{nRT}{V_1}=\frac{0.025mol*0.082\frac{atm*L}{mol*K}*(19+273.15)K}{0.050L}  =11.98atm

V_2=\frac{P_1V_1}{P_2}=\frac{11.98atm*0.050L}{0.200atm}\\ \\V_2=2.995L

Finally, we can compute the work by using the following formula:

W=nRTln(\frac{V_2}{V_1} )=0.025mol*8.314\frac{J}{mol*K}*(19.0+273.15)K*ln(\frac{2.995L}{0.050L}) \\\\W=248.5J

Best regards.

4 0
4 years ago
Which part is the anode of this voltaic cell?
Artist 52 [7]
The anode in a voltaic cell is the source of electrons so it is considered to be negative. The counterpart is the cathode, which is considered to be positive. If you look at the diagram the electron flow goes from A to B. This means that part A is the anode. Part B is the cathode. Part C and D is the electrolyte. 

The answer therefore is the first option.
7 0
4 years ago
the half-life of silicon-32 is 710 years. if 100 grams is present now, how much will be present in 300 years?
umka2103 [35]

The amount of Silicon left after 300 years is 75g

It is given that the initial amount of Si is 100 times decay is 300 years and the half-life of Silicon is 710 years.

The radioactive decay formula is given by,

A = A₀ x 2^(-t/h);

where;

A is the resulting amount after t time, Ao is the initial amt (t=0),t is the time of decay, and h is the half-life of the substance.

On substituting the values from the given we get,

A = 100x2^(-300/710)

A = 100 x 0.746112347

A = 74.6112347 grams left after 300 yrs

Therefore, the number of grams of silicon left after 300 years is 74.6112347g. This value could be rounded off to 75 grams as in the whole number

To know more about half-life, click below:

brainly.com/question/1160651

#SPJ4

3 0
2 years ago
What is the [H+] of a solution with a pH of 5.6
lisabon 2012 [21]

Answer:

Hi there!

The answer to this question is 2.5118X10^-6

Explanation:

The formula to solve this is 10^-pH

5 0
4 years ago
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