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N76 [4]
3 years ago
8

Which is the best description of activation energy?

Chemistry
1 answer:
Naddik [55]3 years ago
7 0
The activation energy is the energy that must be present before for a reaction is to occur. it can be altered and lowered by the use of a catalyst that offers an alternative pathway with a lower activation energy.

hope that helps :)

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A buffer solution contains 0.20 mol of propionic acid (CH3CH2COOH) and 0.25 mol of sodium propionate (CH3CH2COONa) in 1.50 dm3.
const2013 [10]

Answer:

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6 0
3 years ago
What is the independent variable, and the dependent variable in this?
Doss [256]

Answer:

The salt and sugar as well as the baby power and granulated sugar are the independent variables.

The dependent variable is how it reacts (will it dissolve or not)

Explanation:

5 0
3 years ago
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As5F10 compound name
Veseljchak [2.6K]
Pentaarsenic decafluoride
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6 0
4 years ago
12. A helium-filled weather balloon has a volume of 2.4 x 102 L at 99 kPa pressure and a
Luba_88 [7]

Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

V = 2.4 x 10² L

P = 99 kPa

T = 0°C

mass = ?

Process

1.- Convert kPa to atm

P = 99 kPa = 99000 Pa

                   1 atm --------------- 101325 Pa

                    x       ---------------   99000 Pa

                   x = (99000 x 1) / 101325

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2.- Convert temperature to °K

°K = 273 + 0

°K = 273

3.- Substitution

      PV = nRT

- Solve for n

      n = PV / RT

      n = (0.977)(2.4 x 10²) / (0.082)(273)

      n = 24.48 / 22.386

      n = 1.093 moles

4.- Calculate the grams of He

          8 g -------------------- 1 mol

           x    -------------------- 1.093 moles

           x = (1.093 x 8) / 1

           x = 8.74 g                      

6 0
4 years ago
Read 2 more answers
HELP ME PLEASE !!!!!!!!!!!
xenn [34]

Answer:

1231

Explanation:

nnfjjkdnsggjnSVDDK and that how u get the answer i a grammer

6 0
3 years ago
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