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2 years ago

According to collision and transition state theories, what is the importance of activation energy?

1 answer:

3 0

According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break.

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asambeis [7]

The answer will be (B)

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3 years ago

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Which process is similar to binary fission?

elixir [45]

Fission is similar to mitosis because they both involve splitting.

Answer: <span><span>d. mitosis</span></span>

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3 years ago

Find the average speed of a person who swims 105 m in 70 s

spin [16.1K]

Answer:

v = 1.5 m/s

Explanation:

Given that,

Distance covered by a person, d = 105 m

Time taken, t = 70 s

We need to find the average speed of the person. We know that the average speed is given by :

$v=\dfrac{d}{t}\\\\v=\dfrac{105\ m}{70\ s}\\\\v=1.5\ m/s$

So, the average speed of the person is equal to 1.5 m/s.

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2 years ago

How many moles of CaCl2 are contained in 0.448 L of a 0.85 M CaCl2 solution?

kati45 [8]

Answer:

0.3808

Explanation:

number of moles,n=Conc.XVol.

hence 0.85X0.448

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3 years ago

2/10

emmainna [20.7K]

Answer:

pH=2.34

Explanation:

HBr -> H + Br

The dissociation it's complete, for that reason the concentration of the products is the same of HBr

[H+]=[Br-]=0.00234 M

pH= - log (0.00234)=2.34

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3 years ago