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Maslowich
3 years ago
11

What are the two main types of energy?In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

Chemistry
1 answer:
gladu [14]3 years ago
5 0
Potential and kinetic
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A student performs an exothermic reaction in a beaker and measures the temperature. If the thermometer initially reads 35 degree
Ksju [112]

Answer:

C

Explanation:

Exothermic means that heat is released from the reaction

7 0
2 years ago
What is the last energy level of N? Mg?
Alexandra [31]

Answer:

2

3

Explanation:

To infer the last energy of the given atoms, we need to write their electronic configuration:

For N = 1S² 2S² 2P³

     Mg  = 1S² 2S² 2P⁶ 3S²  

The energy levels are usually designated as;

   n = 1

   n = 2

   n = 3

   n =4

For N, the last energy level is 2

     Mg, the last energy level is 3

We can also determine this number by the periods the atoms can be found.

3 0
3 years ago
A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay
Ivahew [28]

Answer: 2.5 grams

Explanation:

5 0
3 years ago
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What's the momentum of a 3.5-kg boulder rolling downhill at 5 m/s? A. 17.5 km·m/s B. 70 kg·m/s C. 8.5 kg·m/s D. 14.3 kg·m/s
swat32

Hey There!:


p = m * V


p = 3.5 * 5


p = 17.5 Km.m/s


Answer A


hope this helps!

7 0
2 years ago
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Which statement describes how pioneer species and climax communities are different?
Monica [59]
That answer for that question is B
4 0
3 years ago
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