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3 years ago

What is the gravitational potential energy of a 5 kg object that is 150

Chemistry

2 answers:

marusya05 [52]3 years ago

5 0

Explanation:

Gravitational potential energy

= mgh

= (5kg)(9.81N/kg)(150m)

= 7357.5J.

omeli [17]3 years ago

3 0

Answer:

$\boxed {\boxed {\sf 7350 \ Joules}}$

Explanation:

Gravitational potential energy can be found using the following formula:

$E_P=m*g*h$

Where m is the mass, g is the gravitational acceleration, and h is the height.

The mass of the object is 5 kilograms. On Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 150 meters.

$m= 5 \ kg \\g= 9.8 \ m/s^2 \\h= 150 \ m$

Substitute the values into the formula.

$E_p=(5 \ kg)(9.8 \ m/s^2)(150 \ m)$

Multiply the first two numbers.

$E_P=(49 \ kg*m/s^2)(150 \ m)$

1 kg*m/s² is equal to 1 Newton.
49 kg*m/s²= 49 N

$E_p=(49 \ N)(150 \ m)$

Multiply.

$E_p=7350 \ N*m$

1 Newton meter equals 1 Joule
7350 N*m= 7350 J

$E_p= 7350 \ J$

The gravitational potential energy of the object is 7350 Joules

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3 years ago

A reaction mixture initially contains 0.140 MCO and 0.140 MH2O. What will be the equilibrium concentration of CO?

Allushta [10]

Answer:

0.013 M

Explanation:

From the question, we can make the following deductions; we are given mixture that contains two compounds, that is A and B, 0.140 M CO and 0.140 M H2O respectively. Then, we are asked to find the equilibrium concentration of Carbonmonoxide,CO.

So, the equation for the reaction is given below;

CO + H2O <-----------------> CO2 + H2.

Initially: we have 0.14M of CO, 0.14M of H2O and zero (0) concentration of CO2 and H2.

At time,t = CO =0.14 - x , H2O = 0.14 - x, CO2 and H2 = x.

The above reaction consist of the forward reaction and the backward reaction.

Therefore, the equilibrium Concentration of CO;

(Since we are giving that Kc = 102). Then, Kc= [CO2][H2] ÷ [CO][H2O]. Where Kc is the equilibrium constant.

Therefore, 102 = [x^2] / [0.14 - x]^2.

==> 10.1= x/0.14 - x.

====> 0.141 - 10.1 x = x.

x + 10.1 x = 0.141.

===> 11.1 x = 0.141.