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Alex_Xolod [135]
2 years ago
8

A piston compresses the air in the cylinder by doing 67.0 J of work on the air. As a result, the air gives off 149.0 J of heat t

o the surroundings. If the system is the air in the cylinder, what is the change in its internal energy?
Chemistry
1 answer:
harina [27]2 years ago
5 0

Explanation:

so sorry

don't know but please mark me as brainliest please

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The table shows the properties of some organic compounds.
riadik2000 [5.3K]

Yo sup??

since A has a hydroxyl group ie OH therefore it's an alcohol

and since B has an oxygen between two carbons therefore it's an ether.

hence the correct answer is option B

A is alcohol and B is ether

Hope this helps

8 0
3 years ago
Blood found in the circulatory system transports many materials, including nutrients, gases and wastes. Which of the following b
marysya [2.9K]

Answer: The Excretory system

Explanation: Because I said LoL

3 0
3 years ago
How can you identify gas in a chemical reaction without observing the atoms or molecules?
nikitadnepr [17]

Answer:

There are five signs of a chemical change:

Colour Change.

Production of an odour.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid).

5 0
2 years ago
ROY G BIV arranges the colors of the rainbow *
Elanso [62]

Answer:

Wavelengths..

Explanation:

The colors we see always go from red, which is least refracted, through orange, yellow, green, blue, indigo and violet -- Roy G Biv. The blue, indigo and violet wavelengths are refracted the most as sunlight passes through raindrops.

8 0
3 years ago
If you burn 50.6 g of hydrogen and produce 452 g of water, how much oxygen reacted?
Svetllana [295]
Acc. to Law of Conservation of Mass
Mass of reactants=Mass of Products
Let mass of Oxygen be x.
So,
50.6+x=452
x=452-50.6
=401.4 g
4 0
3 years ago
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