CHEMISTRY HIGH SCHOOL

PLEASE HELP HURRY (Physical Science)


Use Newton’s Law to explain why a bowling ball will slow down and stop when rolled in a flat surface, like a street.

Answers

Answer 1
Answer:

Answer:

Force is must to change the velocity of an object. Force is always equal to the mass of the object times its acceleration.

Explanation:

From the second law of Newton, it  states that the force is the product of mass of an object and its acceleration. Here, when the bowling ball is rolling across a flat surface, frictional force acts on it which oppose the motion of the ball and causes deceleration of the ball. This is an example of rolling friction. Acceleration of the bowling ball depends directly to the force of friction and indirectly to its mass.

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Find the number of moles of argon in 452 g of argon

Answers

no. of moles = given mass/atomic mass

= 452/40

= 11.3.

Thus, there are 11.3 moles
nó of moles =given mass/molar mass
no of moles=452/39.9
therefore no of moles=11.3moles

Help me please I really need this tomorrow

Answers

Answer:

answers:

1.b

2.d

3.b

4. c

5.c

6.d

7.c

Explanation:

I think this is the correct answer pls mark brainliest and like..

19. place moth balls in the closet and observe after several days.

20. whenever wax or a candle burns it turns from solid to liquid but again at room temperature it turns to solid

21. evaporation, condensation, precipitation

22. it produces new substances

23. vinegar Bubbles when baking soda is added.

24. steam

A _________ shampoo is designed to re-balance the pH level of your hair by neutralizing any alkali and unwanted residues in the hair. Options: A) Clarifying B) Moisturizing C) Neutralizing D) Medicated

Answers

Answer:

C) Neutralizing

Explanation:

A neutralizing shampoo is specifically formulated to restore the pH balance of the hair by neutralizing any alkali or unwanted residues that may have accumulated. It is commonly used after chemical treatments such as perms or relaxers, which can alter the hair's pH level.

Chemical processes like perms and relaxers often involve the use of alkaline substances to break down and reshape the hair structure. After the process is complete, a neutralizing shampoo is used to stop the chemical reaction and bring the hair's pH back to its normal, balanced state. This helps to ensure the hair's health, smoothness, and manageability.

What is the Ka’aba?an Islamic deity
a Muslim pilgrim
a book of Sharia laws
an ancient stone temple

Answers

Answer: Ka'aba is Muslim pilgrimage

Explanation: Kaaba is a small shrine located in Mecca and is considered as a sacred spot by Muslims.

It is a cube shaped structure made up of graystone and marble. It's corners correspond to the points of a compass and is mostly kept covered with a cloth called kiswah.

Answer:

D. An ancient Stone Temple

Explanation:

Edg 2021

25.367 + 15.08 sig fig

Answers

Answer: I think the answer is 40.45 please let me know if it's wrong

How many moles of h2o would be produced from 1.75 moles of o2 with unlimited c3h6

Answers

1.75 (moles O2) × 6 (moles H2O) ÷ 9 (moles O2) = 1.17 (moles H2O)

You have to convert moles of O2 into moles of H2O so it's the number of moles you start with (1.75 O2) × the number of moles from the element you want (6 H20), then ÷ by the number of moles that the element that you already have (9 O2).
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