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.

The test tube is cold best describes what is felt.

Option A is the correct answer.

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

In this case,

The chemical reaction 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 test tube is cold best describes what is felt.

Learn more about the chemical reaction here:

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I just posted a question in the health section I rlly need help asap! Im posting this in the math section so more people see it since ppl on here do math more than health. Pls don't troll or anything and don't waste the answers only answer If you can pls help

1. Diane's has $200 to spend on the basic phone service costs $17.89 per month. If Diane pays for 11 months how much money will she have left over?
2.To lay a drainage system it costs $120 for every 50 feet. Write an equation to determine the cost of laying 300 feet of drainage.
3.Solve: 12 = -4h + 7 +11h

Which of the following would be an appropriate first step to take in solving for "h"?

Group of answer choices

adding 7 to both sides

adding 12 to both sides

combining (-4h) and (11h)

multiplying both side by 4

The figure below shows a rectangular prism and a cube:

A rectangular prism and a cube are drawn side by side. The length of the rectangle prism is 5 inches, the width is 4 over 5 inch, and its height is 1 and 3 over 5 inches. The cube has a side length of 1 over 5 inch.

How many such cubes are required to completely pack the prism without any gap or overlap?

You use a stain remover on two separate stains on a shirt. Design and use a simulation to find the experimental probability that the stain remover removes both the mud stain and the food stain. Probability of Stain Removal Mud 90% Food 80%

I will give brainliest! Make sure to tell me each question label! In a triple batch of a spice mix, there are 6 teaspoons of garlic powder and 15 teaspoons of salt. Answer the following questions about the mix.7a, 7b, 7c, 7d
(7a) How much garlic powder is used with 5 teaspoons of salt? *
(7b) How much salt is used with 8 teaspoons of garlic powder? *
(7c) If there are 14 teaspoons of spice mix, how much salt is in it? *
(7d) How much more salt is there than garlic powder if 6 teaspoons of garlic powder are used? *

A truck and a SUV are 315 miles apart when they start moving towards each other on a straight road. The speed of the SUV is 55 while the truck's speed is 5 mph slower.

How far apart are the vehicles?

Please help me.

ILL GIVE BRAINLIEST I NEED HELP ASAP
Question 1
What is the probability of rolling an odd number on a fair number cube and tossing tails on a fair coin?

A. 1/4
B. 1/2
C. 5/8
D. 5/6

Question 2
A coin is tossed and a fair number cube is rolled.
What is the probability of getting heads and a 3 or 4?

Question 3
You toss a coin and a dice. The probability of getting tails and a 1 or 2 is 1/6. If you conduct 180 trials, predict the number of times the outcome will be heads and a 1 or 2.

A. 1080
B. 30
C. 20
D. 60

Write the expression with fewer terms.

12x-4y+5x

A concert promoter charges $65 per ticket for a concert. The promoter's cost will be $5500 plus $4 per ticket.

If r = revenue and n = number of tickets sold, then r(n) shows how revenue (amount of money received from ticket sales) depends on the number of tickets sold.

r(n) = 65n

If c = cost and n = number of tickets sold, then c(n) shows how cost (expenses of the concert promoter) depends on the number of tickets sold.

c(n) = 4n + 5500

HELP! FINALSS!
A bookshelf at a bookstore is 3 feet 9 inches wide. There are 18 copies of the same book on the shelf, which fit the shelf exactly. What is the width of 1 of the books?

A. 3 1/6 inches
B. 2 3/4 inches
C. 2 2/3 inches
D. 2 1/2 inches

A recipe calls for 3 cups of milk for every 2 cups of flour. If you have 15 cups of milk, how many cups of flour will you need?

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length?
А. 12 inches
B. 15 inches
C. 21 inches
D.40 inches​

-3 2/7 -(2 2/3) can someone please help me

Is this a function----------------

HELP ME ASAP. I WILL GIVE BRAINLIEST PLS PLS PLS HELP!!! DON'T ANSWER IF U ARE NOT GONNA GIVE A GOOD ONE!!!
Arrange the events based on when they happen in the plot of "Up the Slide" by Jack London.
Group of answer choices
1

[ Choose ]
2

[ Choose ]
3

[ Choose ]
4

[ Choose ]
5

[ Choose ]

Options:
Clay goes in search of a dead pine tree to use for firewood
Clay uses his ax to help him move down the mountain
Clay makes a profit from selling the firewood
Clay climbs across the steep mountain slope to cut down the tree
Clay discovers more trees to be used as firewood.

You work two jobs in the winter. You babysit for your neighbor, making $6 per hour, and you clear snow from driveways, making $10 per hour. You want to buy the latest X-Box ™ that costs $500. Write an equation that represents how you can earn enough money to buy the latest X-Box ™.
SECOND PART
Describe two ways that you can earn enough money to buy the latest X-Box ™. Show calculations that prove your two ways are viable answers
I HAVE NO CLUE HOW TO DO THIS PART

i need help ASAP!!!!!!!!!!!!!!!!!!​

help please due now....

Choose one card value and its additive inverse. Choose from the list below to write a real-world story problem that would model their sum.
a. Elevation: above and below sea level
b. Money: credits and debits, deposits and withdrawals
c. Temperature: above and below 0 degrees
d. Football: loss and gain of yard

Unit 3 Lessons 1-4 Practice Problems
24 of 2524 of 25 Items























































































Item 24
POSSIBLE POINTS: 21.33
Based on the given measurement in each situation below, estimate the other two measurements for the circle. Use 3.14 as an approximation for pi and round your answer to the nearest whole number.

Remember: Circumference= diameter × π OR Circumference= 2×radius× π

Type your answers in the boxes below.

1. The length of the minute hand on the clock is 5 inches.

Diameter:
inches Circumference:
inches

2. The distance across a sink drain is 3.8 cm.

Radius:
cm Circumference:
cm

3. The tires on a mining truck are 14 feet tall.

Radius:
feet Circumference:
feet

4. The fence around a circular pool is 75 feet long.

Diameter:
feet Radius:
feet

5. The distance from the tip of a slice of pizza to the crust is 7 inches.

Diameter:
inches Circumference:
inches

6. Breaking a cookie in half creates a straight side 10 cm long.

Radius:
cm Circumference:
cm

7. The length of the metal rim around a glass lens is 190 mm.

Diameter:
mm Radius:
mm

8. From the center to the edge of a DVD measures 60 mm.

Diameter:
mm Circumference:
mm

Simplify the expression 15 − 3(3a + b) + 5a − 6b.

SIMPLIFY
15^3 x 15^5

A hospital ordered 4 boxes of cotton swabs. There were 71 cotton swabs in each box. How many cotton swabs did the hospital order in all

i need help on this i was never able to figure it out

plz help with this problem

Seven more than 3 times a number can be translated
as what?

4) ASAP HELP I WILL GIVE BRAINLIST IF YOU GIVE ME THE CORRECT ANSWER

solve for d: 52.47d - 26.72 = 235.63

Please help me on these questions!!! Also, show your work so I can see how you did it so that I can learn how to do this stuff too!!!!! Lots of points if you help me on all of these questions!! Brainliest if you help me understand!!!

Evaluate the expression. Write your answer as a fraction in simplest form.
-3 3/4 x 5/6 - 2 1/3=