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attashe74 [19]
3 years ago
13

What is an advantage of forced air heating?

Physics
2 answers:
Lelu [443]3 years ago
8 0

i do believe the answer is c not sure but correct me if im wrong

Ilia_Sergeevich [38]3 years ago
3 0

Answer:

B. It's energy efficient

Explanation:

Forced air heating involves the use of air as medium of transportation of heat in an enclosed space. The heat is transmitted through duct system and distributed by vents to other parts of the space

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Argon, atomic number 18, has an atomic weight of 39.9. Potassium, atomic number 19, has an atomic weight of 39.1. Which of these
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Answer: D

Explanation:

Atomic weight is measured by adding the number of protons and neutrons in an atom's nucleus. Argon's atomic number is 18 while potassium's is 19. This means that Argon will always have 18 protons while potassium will always have 19 protons.

To make the numbers easier to work with, round each atomic weight. We'll say the atomic weight of potassium is 39 and the atomic weight of argon is 40. To see how many neutrons each one has, I can set up a simple equation for each using the following equation:

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