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Jet001 [13]
4 years ago
11

Which statement about activation energy is true? a. It is not affected by catalysts. b. It has no effect on the rate of the reac

tion. c. It is the energy required to break existing chemical bonds. d. It is the same for all reactants.
Chemistry
2 answers:
TiliK225 [7]4 years ago
8 0
C. the energry required to break existing chemical bonds
Vsevolod [243]4 years ago
3 0
Activation energy is the term coined by the Swedish scientist Svante Arrhenius on 1889. The term is used to refer or describe the minimum energy which must be available for the system of chemicals to have a chemical reaction. Hence, the answer to the question is letter "C. It is the energy required to break existing chemical bonds". 
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Water flows over Niagara Falss at the average rate of 2,400,000 kg/s, and the average height of the falls is about 50 m. Knowing
liberstina [14]

Answer:

1. 176 × 10^12 W ; 78400000000

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How many 15 W LED light bulbs could it power?

Recall : power = workdone / time

Workdone = gravitational potential energy

Mass of water = density * volume

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Rate of fow = volume / time = 2400000

Hence,

Power = 1000 * 2,400,000 * 9.8 * 50

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4 0
3 years ago
What two particles make up the mass number?
abruzzese [7]

Answer:

The mass number of an atom is its total number of protons and neutrons.

Explanation:

3 0
3 years ago
The specific heat of a certain type of metal is 0.128J/(g.°C). What is the final temperature if 305 J of hear is added to 28.8 g
klasskru [66]

Answer: Temperature final = 103 °C

Explanation: To solve for final temperature we use the equation of heat:

Q= mc∆T

Next derive the equation to find final temperature

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Transpose T initial and change the sign so that T final will be left.

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T final = 305 J / 28.8 g x 0.128 J/(g°C)

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law of independent assortment

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