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bazaltina [42]
3 years ago
12

What is the expected outcome of adding a catalyst to a chemical reaction?

Chemistry
1 answer:
Mars2501 [29]3 years ago
7 0
The answer is A my dude
You might be interested in
What is the formula for the compound made from mercury (II) and the nitrate ion.
Kazeer [188]

Answer:

Hg(NO3)2

Explanation:

Hope it helps! :)

5 0
3 years ago
Read 2 more answers
a 45g sample of water at 12°c is heated with 15kJ of energy. What will be the final temperature of the water?
Marizza181 [45]

Answer:

Final temperature  = 91.75  °C

Explanation:

Given data:

Mass of water = 45 g

Initial temperature = 12 °C

Energy required = 15 Kj (15000 j)

Final  temperature = ?

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Solution:

Q = m.c. ΔT

15000 j = 45 g × 4.18 j/g.°C × (T2 -T1)

15000 j = 45 g × 4.18 j/g.°C × (T2-  12 °C)

15000 j = 188.1 J/°C × (T2-  12 °C)

15000 j / 188.1 J/°C = T2-  12 °C

79.745 °C  = T2 - 12 °C

T2 = 79.745 °C +  12 °C

T2 = 91.75  °C

4 0
3 years ago
while the substance is a liquid at what temperature do the molecules of the substance have the greatest average kinetic energy ​
dalvyx [7]

The molecules of the liquid will be having the greatest average kinetic energy when the temperature of the liquid reaches its boiling point.

<u> Explanation: </u>

Average kinetic energy is the measure of kinetic energy exhibited by the molecules of any substance. It is directly proportionate to the temperature of the substance. According to kinetic molecular theory,

                           k=\frac{3 R T}{2 N_{A}}

As the molecules in solids are mostly closely packed, so they will attain the least kinetic energy of molecules in solid phase. Similarly, the molecules in liquid are slightly loosely packed and on increasing the temperature, the molecules will attain more energy to increase their neighbouring distances.

And when that temperature reaches the boiling point of that liquid substance, the molecules had attained the maximum amount of energy to increase its average kinetic energy to the maximum limit and transferring the liquid molecules to gaseous state.

As the molecules in gas phase are very loosely packed. The starting of the change in the state of molecules from liquid to gas phase on reaching the boiling point indicate the maximum average kinetic energy at that point.

4 0
4 years ago
A sample of gas has a pressure of 100.0 KPa and 25C. Calculate the pressure if the temperature is changed to 125C while the volu
atroni [7]

Answer:

133.56kPa

Explanation:

Applying Pressure Law,

P/T = P'/T'....................... Equation 1

Where P = Initial pressure, T = Initial Temperature, P' = Final pressure, T' = Final Temperature.

From the question, we were asked to calculate P'

There, we make P' the subject of the equation

P' = PT'/T...................... Equation 2

Given: P = 100kPa, T = 25°C = (273+25) = 298K, T' = 125°C = (273+1250K = 398 K

Substitute these values into equation 2

P' = (100×398)/298

P' = 133.56kPa

Hence the pressure is 133.56kPa

6 0
3 years ago
HEY COULD SOMEONE PLEEZ HELP ASAP!?!?THANKS! :)
marysya [2.9K]
OKAY I HELPED YOU (: !
6 0
4 years ago
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