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wel
4 years ago
11

Which actions represent endothermic reactions? Check all that apply.

Chemistry
2 answers:
marishachu [46]4 years ago
8 0

Answer:

Well, one is if heat is absorbed by the system from the surroundings, the system gains heat from the surroundings and so the temperature of the surroundings decreases.

Explanation:

Inessa05 [86]4 years ago
6 0

Answer

Explanation:And endothermic reaction is-A reaction that absorbs heat from the surroundings so choose the best answer that shows an endothermic reaction.I suggest that you find the answer with a exothermic reaction cut them from your answer choices then choose the answer choices you are left with then choose which answer is BEST.

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Debbie and Ben are performing a frog dissection in their biology class. As a safety precaution, Debbie and Ben must do all of th
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D is the correct answer, you do not want to keep the fumes from numerous frogs in a room. There is no logical reason to keep the fumes inside.

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4 years ago
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This diagram shows a ball rolling from left to right along a frictionless surface. In which sections will the ball be subjected
arlik [135]

Answer:

C.

Explanation:

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6 0
3 years ago
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740 torr, and a temperature of 25 °C. Wh
Nat2105 [25]

Answer:

527.68 mL

Explanation:

We will assume that nitrogen is behaving as ideal gas here.

For ideal gas the gas law is:

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

Where

P1= initial pressure = 740 torr

V1= initial volume = 500mL

T1= initial temperature = 25⁰C = 298 K

P2= final pressure = 760 torr

V2= final volume = ?

T2= final temperature = 50⁰C = 323 K

Putting values in the gas law

Final volume = \frac{740X500X323}{298X760}= 527.68 mL

5 0
3 years ago
A monosaccharide that contains 4 carbon atoms, one of which is in an aldehyde group, is classified as a(n)
frutty [35]

Answer:

A monosaccharide that contains 4 carbon atoms, one of which is in an aldehyde group, is classified as an aldotetrose.

Explanation:

A tetrose is a monosaccharide with 4 carbon atoms.

They have either an aldehyde functional group in position 1 (aldotetroses).

or a ketone functional group in position 2 (ketotetroses).

So, A monosaccharide that contains 4 carbon atoms, one of which is in an aldehyde group, is classified as an aldotetrose.

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Answer: i dont understand

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3 years ago
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