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Pepsi [2]
3 years ago
6

In a closed system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances (qwat

er= -qliquid). Which process in your activity was endothermic? Which process was exothermic? The gained energy or heat in the liquid was endothermic, while the loss of energy or heat of water was exothermic.
Chemistry
2 answers:
ASHA 777 [7]3 years ago
8 0

Answer:

exothermic process=heat given off by system

endothermic process = heat absorbed by cooler substance

frez [133]3 years ago
5 0

Answer: The gained energy is endothermic, while the loss of energy is exothermic.

Explanation:

Endothermic absorb heat from the surroundings

Exothermic releases heat to the surroundings

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7 0
3 years ago
Which electron configuration represents the electrons of an atom in an excited state? * 2-3 2-7-1 2-8 2-8-1​
Lemur [1.5K]

2-7-1

<h3>Further explanation </h3>

Electrons can move the shell up or down by releasing energy or absorbing energy  

Excited electrons show higher electron transfer to the shell by absorbing energy  

So it can be concluded that there are 2 conditions:  

Ground state is the state of electrons filling shell with the lowest energy levels.  

Excited state is the state of electrons which occupies a higher energy level  

The state of excited electrons can be seen from the presence of electrons which do not fill the skin completely but fill the skin afterward  

2-7-1

From its 8 electron configuration, filling 3 shells, 2 electrons in the firs shell, 7 electrons in the second shell and 1 electron in the third shell

the electrons in the third shell should fill the electrons in the second shell first according to Aufbau rule (lower energy shells)

\tt  1s^22s^22p^4\rightarrow ground~state\\\\1s^22s^22p^33s^1\rightarrow excited~state

8 0
2 years ago
Marcy is running in a race. Her body is changing into .
Blababa [14]

Answer:

Running changes your body by burning body fat and building muscles. Expect to lose fat at the top of your thighs, build stomach muscles of steal and a butt to die for the weight. ... Running increasing your strength and endurance plus interval training can boost your metabolism.

Explanation:

4 0
3 years ago
When designing an engineering solution, certain criteria and constraints must be considered. Criteria are the features of the de
kondor19780726 [428]

Answer:

The criteria listed in order of importance are;

1) To be inflated in the event of a collision in order to protect the occupants of the front of the vehicle

2) To be able to withstand the load of the breaking force of the occupants in the front seat of the vehicle during a collision

3) To be relatively tough so as to resist being torn on impact with a sharp object

The constraints listed in order of importance are;

1) How is the model design able to sense a collision that requires the airbag to be inflated

2) The uncertainty of the load the airbag will withstand upon collision

3) The possible hazard that could be caused by the gas used to inflate the airbag

4) The usage/interaction tendency between the vehicle occupant and the airbag system

Explanation:

In order to produce an effective design, it is important to be able to foresee the possible deficiencies of an idea so as to be able to mitigate the problems before an actual incident happens.

5 0
3 years ago
You'll be given 100 points if you answer this question!!!!!!!!!!!!
storchak [24]

Answer:conducts ,steel, polystyrene, thermal insulation

Explanation:

5 0
2 years ago
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