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mario62 [17]
3 years ago
6

What is activation energy?

Chemistry
2 answers:
Flauer [41]3 years ago
5 0
The only answer we can choose
<span>B.
energy needed to break chemical bonds.</span>
dem82 [27]3 years ago
5 0
B.
energy needed to break chemical bonds

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20 ML of a gas at 200 K is heated until the new volume is 55ML what is the final temperature of the gas
MrRa [10]

Answer:

T2 = 550K

Explanation:

From Charles law;

V1/T1 = V2/T2

Where;

V1 is initial volume

V2 is final volume

T1 is initial temperature

T2 is final temperature

We are given;

V1 = 20 mL

V2 = 55 mL

T1 = 200 K

Thus from V1/T1 = V2/T2, making T2 the subject;

T2 = (V2 × T1)/V1

T2 = (55 × 200)/20

T2 = 550K

8 0
3 years ago
Which of the following statements are TRUE?
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Answer:

Answered

Explanation:

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3 0
3 years ago
How many valence electrons does chlorine have?
Advocard [28]
Valence Electrons has \boxed{7} chlorine
3 0
3 years ago
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4. Describe the movement of the water molecules at cold temperatures.
kenny6666 [7]

Answer:

Point out to students that molecules of hot water are moving faster and are slightly further apart. The molecules of cold water are moving slower and are a little closer together. If students do not notice a difference, move the slider all the way to the left again and then quickly to the right.

2. How do molecules move in cold water?

Compare the speed of molecules in hot water compared to molecules in cold water? Water molecules move faster in hot water and slower in cold water. water molecules in cold, room temperature, and hot water. most of the liquid.

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3 years ago
The last group on the periodic table is called the noble gases. The elements in this group are
Anni [7]

Answer:

C

Explanation:

They are stabil and full of valence electron.

6 0
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