All categories

2 years ago

How do catalysts increase the rate of a chemical reaction?

Chemistry

2 answers:

Thepotemich [5.8K]2 years ago

6 0

A] They lower the activation energy.

uranmaximum [27]2 years ago

4 0

The correct answer is A

You might be interested in

Mature elephants consume an average of 600 pounds of food per day. If an elephant

MAXImum [283]

Answer:

$\large \boxed{\text{4 600 000 kg or 4600 Mg}}$

Explanation:

1. Calculate the adult life

If the elephant is an adult from its 10th birthday until the day before its 56th birthday, its

Adult life = 55 - 10 + 1 = 46 yr

2. Convert years to days

$\text{Adult life} = \text{46 yr} \times \dfrac{\text{365.25 da}}{\text{1 yr}} = \text{16 800 da}$

3. Convert days to pounds of feed

$\text{Feed} = \text{16 800 da} \times \dfrac{\text{600 lb}}{\text{1 da}} = 1.01 \times 10^{7} \text{ lb}$

4. Convert pounds to kilograms and megagrams

$\text{Feed} =1.01 \times 10^{7} \text{ lb} \times \dfrac{\text{1 kg}}{\text{2.20 lb}} =\textbf{4 600 000 kg} = \textbf{4600 Mg}\\\\\text{The elephant will eat $\large \boxed{\textbf{4 600 000 kg or 4600 Mg}}$ of food.}$

Note: The answer can have only two significant figures because that is all you gave for age of the elephant.

5 0

3 years ago

The density of whole blood is 1.05 g/ml. a typical adult has between 4.7 and 5.5 l of whole blood. what is the mass in pounds of

Kisachek [45]

<span>1.05 g/ml * 1000 ml = 1050g/l because of 1g/ml = 1 kg/l so, a/q mass of 4.7 l of whole blood in pound = 4.7 * 1050 = 4935 g so in pound 4935g = 10.87981p</span>

5 0

2 years ago

What are the coefficients to balance the following equation?<br> ba+br=babr2

scoray [572]

1 ba+2 br——>1 babr2

u just have to make sure u have the same number of each type of atom on either side of the equation:)

8 0

2 years ago

Which option best describes hydrolysis?

Bezzdna [24]

: A chemical process of decomposition involving the splitting of a bond by the addition of water.

7 0

2 years ago

You are on vacation with your family up in the mountains. Your friend is on vacation near the equator by the ocean. Explain whic

Kay [80]

Answer:

it would be colder on the mountains becouse there is less air up there and it would be a lot more humid down by the ocean

Explanation:

3 0

2 years ago