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alukav5142 [94]
3 years ago
14

Which of the following is the definition of an open physical system? A. a system that can be affected by the outside environment

, by an exchange of
matter or energy
B. a system isolated from the outside environment, which cannot exchange matter
or energy with the system
C. an insulated drink container
D. an artificial representation of a real system or process, designed to help
understand the structure or behavior of the actual system or process for SCIENCE not chemistry
Chemistry
1 answer:
sergey [27]3 years ago
5 0

Answer:

A. a system that can be affected by the outside environment, by an exchange of matter or energy

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2
Alina [70]

Answer:

N - 1s²2s²2p³

Explanation:

Nitrogen is located in the p-block of the periodic table (groups 13-18) and is on the 2nd period.

The 2nd period tells us the principal energy level (a quantum number) is n = 2. Therefore, it must have already filled up the 1s sublevel.

The groups 13-18 on period 2 tells us that the 2s sublevel is also filled.

Nitrogen is located in Group 15. That means that there are 3 electrons that have filled the 2p sublevel, out of a possible 6.

Therefore, our electron configuration is 1s²2s²2p³

2p³ (Shorthand Config)

[He] 2s²2p³ (Noble Gas Config)

7 0
4 years ago
What periodic pattern are noticed for the charges on the ions
Vadim26 [7]
charge of elements increases by one as you move from left to right.
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3 years ago
A swimmer can swim 1000 m in 400 seconds. What is her average speed in m/s?
maxonik [38]

Answer:

2.5m/s

Explanation:

speed= distance/time

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time=400s

1000m/s/400s=2.5m/s

3 0
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What are Example of alkalis ?
iogann1982 [59]
Toothpaste, sodium hydroxide
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Potassium iodide solution, lead(ll) nitrate solution
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