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solong [7]
3 years ago
10

19. Which of the following statements is accurate? A. If an object is said to be decelerating, its velocity must be increasing.

B. If an object's velocity decreases, then the object is accelerating. C. If an object's velocity remains constant, its acceleration must be increasing. D. If an object's velocity is changing, it's either experiencing acceleration or deceleration
Chemistry
2 answers:
m_a_m_a [10]3 years ago
8 0

your answer is D. If an object's velocity is changing, it's either experiencing acceleration or deceleration

i just took the test

Pepsi [2]3 years ago
7 0
I would think it would be D because if the velocity can change and if that changes then its either acceleration or deceleration. depends on how it changes.

I hope that helps! :)
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a solution of copper sulfate slowly evaporates beautiful blue crystals made Cu(11) and sulfate ions from such that water molecul
adelina 88 [10]

Answer:

36.08%

Explanation:

We are given the overall formula of the compound as: CuSO4•5H2O

Now, atomic mass of the elements are;

Cu = 63.55 g/mol

S = 32.07 g/mol

O = 16 g/mol

H20 = 18.02 g/mol

Now, let's calculate the total mass of the compound:

(63.55 g/mol) + (32.07 g/mol) + 4(16 g/mol) + 5(18.02 g /mol) = 249.72 g/mol

From the above, water in the compound is 5(H20)

Thus, total water atomic mass = 5 × 18.02 = 90.1 g/mol

Thus, percentage of water = (atomic mass of water/total mass of compound) × 100%

Percentage of water = (90.1/249.72) × 100% = 36.08%

6 0
2 years ago
450.0 mL of an unknown gas has its pressure decreased from 0.07 atm to 0.04 atm. Assuming temperature remains constant, what wou
tino4ka555 [31]

The final volume of the unknown gas is 787.5 ml

Given:

volume of unknown gas = 450.0 mL

initial pressure of unknown gas = 0.07 atm

final pressure of unknown gas = 0.04 atm

To Find:

final volume of the unknown gas

Solution:

Substituting these values into Boyle’s law, we get

P1V1 = P2V2

(0.07)(450) = (0.04)V2

V2 = (0.07)(450)/(0.04)

V2 = 787.5

So, final volume of the unknown gas is 787.5 ml

Learn more about Volume here:

brainly.com/question/25736513

#SPJ4

4 0
2 years ago
What are the 3 types of weathering
givi [52]
Chemical, physical, and biological 
are the three types of weathering
Hope this helped!!
3 0
3 years ago
Read 2 more answers
Name the region of the atom where protons and neutrons are located.
inn [45]

Answer:

Nucleus

Explanation:

5 0
3 years ago
Solar radiation provides more heat and cleaner than near the pools on Earth the greatest amount of heat is moved away from the e
Rashid [163]

Answer:

Ocean Currents

Explanation:

The correct answer is Ocean currents.

When the earth receives solar radiation, a large fraction of this incident radiation is usually absorbed by the oceans and the seas, which become warm. Usually, equitorial regions are the ones that have this phenomenon. Now, when ocean currents are flowing from the equator, they usually carry this warm water with them thereby moving the greatest amount of heat from the equator on its way out.

For example, In the Pacific Ocean, there is a current known as Alaska Current that carries warm water in the northward direction thereby making Anchorage which is Alaska's largest city to have a much mild weather than the inland areas with the same latitude.

4 0
3 years ago
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