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dexar [7]
3 years ago
5

MAJOR, PLEASE HELP, BRAINEST IF CORRECT

Chemistry
1 answer:
Vanyuwa [196]3 years ago
6 0

Answer:

B and C

Explanation:

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Why is activation energy required to start some reactions?
maxonik [38]
The activation energy is the minimum required energy in order to start a reaction. It is the barrier to break to enable reactants to form products. It is not important only for some reactions but to all reactions. This energy should be supplied or reached first before we observe a reaction to happen.
4 0
3 years ago
What inference can be drawn from the graph?
defon

Answer:

i think its C

Explanation:

7 0
2 years ago
When the pressure that a gas exerts on a sealed container changes from 1100 bar to 75.5 bar, the temperature changes from k to 2
Serjik [45]
Gay-Lussac's law gives the relationship between pressure and temperature of gas. For a fixed amount of gas, pressure is directly proportional to temperature at constant volume.
P/T = k
where P - pressure , T - temperature and k - constant
\frac{P1}{T1} =  \frac{P2}{T2}
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
substituting the values in the equation 
\frac{1100 bar}{T}  =  \frac{75.5 bar}{298 K}
T = 4342 K
initial temperature was 4342 K
7 0
4 years ago
What is the volume in milliliters of 7.66 g of acetone
frosja888 [35]
In order to solve this, we have to know the density of acetone because it is the ratio of mass to volume. At a certain temperature and pressure, the density of a specific substance does not change. It is an intrinsic property of a substance with temperature and pressure dependence.  Assuming this is in normal conditions, the density is equal to 0.784 g/mL. So, the volume would be equal to

Volume = Mass/Density
Volume = 7.66 g/0.784 g/mL = 9.77 mL
3 0
4 years ago
Given the balanced equation representing a reaction: h2 → h h what occurs during this reaction? 1. energy is absorbed as bonds a
larisa [96]
I believe the correct answer from the choices listed above is option 2. From the balanced equation, the energy is absorbed as the bonds are broken. Energy is needed to be supplied for the bonds to be broken.

Hope this answers the question. Have a nice day.
8 0
3 years ago
Read 2 more answers
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