Two chemicals are mixed in a test tube and a chemical reaction takes place. If this reaction is endothermic and the test tube is touched, which of the following best describes what is felt?The test tube is cold.

The test tube is warm.

The test tube is very hot.

The test tube is the same temperature as the air.

Answers

Answer 1

Answer:

The testtube is cold best describes what is felt.

Option A is the correct answer.

What is a chemical reaction?

A chemicalreaction is a process that leads to the transformation of one set of chemical substances into another.

In other words, it is the process of breaking and forming chemical bonds between atoms to create new compounds with different properties than the original substances.

We have,

An endothermicreaction is a type of chemical reaction that absorbs heat from the surrounding environment, resulting in a decrease in temperature.

In this case,

The chemicalreaction that occurred in the test tube absorbed heat from the surroundings, including the air and the test tube itself.

As a result, the temperature of the test tube decreased, making it feel cold to the touch.

Thus,

The testtube is cold best describes what is felt.

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Answer 2

Answer:

Final answer:

In an endothermic reaction, the test tube will feel cold because heat is absorbed by the system from the surroundings.

Explanation:

A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. In the course of an endothermic process, the system gains heat from the surroundings, and so the temperature of the surroundings decreases.

The quantity of heat for a process is represented by the letter q. The sign of q for an endothermic process is positive because the system is gaining heat.

A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Because the surroundings are gaining heat from the system, the temperature of the surroundings increases.

The sign of q for an exothermic process is negative because the system is losing heat.

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Write 7/8 as the sum of unit fractions.

Answers

7/8 as the sum of unit fractions is 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8.

What is a fraction?

A fraction is written in the form of p/q, where q ≠ 0.

Fractions are of two types they are proper fractions in which the numerator is smaller than the denominator and improper fractions where the numerator is greater than the denominator.

Given, A fraction 7/8.

We know a unit fraction has 1 in its numerator.

Therefore, The fraction 7/8 as the sum of the unit fraction is,

= 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8.

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I think I can help:

7/8 = 3/8+4/8

7/8 = 2/8+5/8

7/8 = 1/8+6/8

Hope I helped! (Pick me as brainliest!)

What times what equals 52

Answers

4 x 13 = 52
52 x 1= 52
1 x 52=52
26 x 2=52
-52 x -1=52
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PLEASE HELP!!!!Complete the equation for the linear function whose graph contains the points

(−1, −2) and (3, 10).

y +__ = __(x + 1)

Answers

Hi
A(-1,-2)
B(3,10)

Firstly I will find slope of this linear function:
m=(y-yo) / (x-xo)

m=(-2-10)/(-1-3)
m=-12/-4
m=3

Replacing A(-1-2) :
(y-yo)=m(x-xo)

y+2 =3(x+1)

:D

The world's fastest insect is the dragonfly,which can fly upto 36 miles per hour.At this rate,how long would t take a dragonfly to travel 54 miles?

Answers

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If Sandy's cookie recipe calls for 1/3 cup of brown sugar and she increases it by 2/9 of cup, how much brown sugar does she use?

Answers

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A game at a county fair has a spinning drum holding 15 colored plastic balls: some white, some green, and some red. Every time the drum spins, one ball drops out, its color is recorded, and then the ball is placed back in the drum. The table shows the results after 15, 150, and 1500 spins.What is the best estimate of the number of white balls in the drum?

Outcome Number of trials
15 150 1500
white 5 61 680
green 9 74 713
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A.
1

B.
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C.
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D.
7

Answers

i would say c

lets REALLY hope that helps

i also say that the answer is c

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