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RUDIKE [14]
3 years ago
8

Which of these correctly describes the energy that makes the carousel turn

Chemistry
1 answer:
Dmitrij [34]3 years ago
8 0

Answer:

F

Explanation:

A carousel can be made to rotate using different sources of energy.  One may decide to use electric energy, manual effort, water energy or heat energy as in a candle carousel.

When the candle is lit, heat energy is supplied and warm air rises heating up the air near the carousel eventually causing it to start rotating.

Hence heat from the candle leads to a current of warm air that rises up, causing the carousel to start rotating.

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Find change H for the reaction as it occurred in the calorimeter.
dimaraw [331]
Delta H = q / mass * delta temperature
3 0
3 years ago
An atom of Fe has 30 neutrons. What is the mass number of this atom?
SVETLANKA909090 [29]

Answer:

56

Explanation:

The mass number of an atom is a sum of its number of protons and neutrons. Iron (Fe) has an atomic number of 26. This means that it has 26 protons. Since we know it has 26 protons and are told it has 30 neutrons. The mass number of this atom of Iron is 26+30 = 56

Hope this helped!

7 0
3 years ago
Bob adds heat to a substance. When enough heat is added, A. its particles move closer together and the substance becomes a gas.
Elena L [17]

Answer:

C. its particles move farther apart and the substance becomes a gas.

Explanation:

A. is wrong because moving closer together creates a solid, not a gas.

B. is wrong because moving father apart creates a gas, not solid.

C. is correct because moving farther apart creates a gas.

D. is wrong because when heat is added particles spread apart because they vibrate faster. Although, in a solid the particles are closer together.

- Just know the states of matter and how the particles move and that will help with this problem.

6 0
2 years ago
Which intermolecular force would affect the boiling point the least?
Maksim231197 [3]

Answer:

I'm pretty sure its h bonding. however I could very welp see it being Van der Waals

4 0
2 years ago
Read 2 more answers
Calculate the volume of this regular solid.
nataly862011 [7]

Answer:2,144.7

Explanation:

7 0
2 years ago
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