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Effectus [21]
3 years ago
8

What change could a chemist make to a reaction environment that would increase the likelihood that molecules in a reaction would

have sufficient energy to overcome the activation energy?
a. decrease the number of reactants

b. increase the volume

c. increase the temp

d. decrease the pressure
Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
4 0
I think the answer is b. I’m not sure just gotta answer sum lol
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When you apply 1000 joules of energy to 50 grams of water its temperature changes to 30 degrees . What was the initial temperatu
expeople1 [14]

Answer:

25.2°C

Explanation:

Given parameters:

Energy applied to the water  = 1000J

Mass of water  = 50g

Final temperature  = 30°C

Unknown:

Initial temperature  = ?

Solution:

To solve this problem, we use the expression below:

            H  = m c Ф

H is the energy absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

     1000  = 50 x 4.184 x (30  -  initial temperature )

     1000  = 209.2(30 - initial temperature)

      4.78  = 30 - initial temperature

      4.78  - 30  = - initial temperature

         Initial temperature  = 25.2°C

7 0
2 years ago
Use significant digits to express the weight of a 150.0 lb person in kilograms ( 1 lb = 453.6 g)
slamgirl [31]

Answer:

150.0 = 68.038856

Explanation:

kilograms

4 0
2 years ago
10) One mole of a diatomic ideal gas is initially at a temperature of 127 °C and
Vladimir79 [104]
Ok hold on one second
6 0
3 years ago
Which of the following is most likely to dissolve in NH3? A) CO2 B) CH4 C) H2S D) BH3
dem82 [27]

Answer:

C) H2S

Explanation:

In chemistry, the dissolution of one substance in another is dependent on the magnitude of intermolecular interaction between the two substances.  Hence, if two substances do not interact in one way or the other, then one can not dissolve the other.

Let us consider the fact that NH3 is a polar molecule and it is a general principle that like dissolves like. Hence, only H2S which is also a polar molecule can effectively interact with  NH3 due to dipole-dipole interaction between the two molecules.

Also, ammonia reacts with hydrogen sulphide as follows;

2NH3 + H2S → (NH4)2S

Hence H2S is more likely to dissolve in NH3.

5 0
3 years ago
If a solution has virtually no hydrogen ions what type of ph does it have?
lora16 [44]
D. It has almost no hydrogen ions, therefore it is very basic.
7 0
3 years ago
Read 2 more answers
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