Chemistry High School

PLEASE HELP
Which of the following shows the kinetic form of mechanical energy?

A. Pedaling a bicycle
B. Holding a basketball
C. Lying on the ground
D. Watching television

Answers

Answer 1

Answer: A. Pedaling a bicycle

Explanation: i also have the same question too and im in 5th grade

Related Questions


5. (03.01 LC)
Which of the following is matter in its liquid form?(2 points)
Animals
Plants
Rain
Sunlight

Answers

Answer:

rain

Explanation:

rain drops are water and water us a liquid

How many atoms of Hydrogen are in the 3 molecules of glucose?
3C6H12O6?

Answers

Answer:

36 hydrogen atoms in 3 molecules of glucose

Explanation:

The formula for one molecule of glucose is C₆H₁₂O₆

There are 12 hydrogen atoms in one molecule so in three molecules there would be 36

Explain how the rock cycle works.
Be sure to include the name of each type of rock in your description.

(Igneous rock, metamorphic rock, and sedimentary rocks)​

Answers

How does the rock cycle work? Rocks turn from one type into another in an endless cycle. ... Inside Earth, heat, pressure, and melting change sedimentary and igneous rock into metamorphic rock. Intense heating results in hot liquid rock (magma) bursting through Earth's surface and turning into solid igneous rock.

find the mass in 3.8 moles of magnesium chloride​

Answers

Explanation:

34.31+35.45(2)=

27.31+70.90=

95.21g/mol

This chart shows descriptions of the atoms for four different substances.

Which substance is a solid?

Object 1
Object 2
Object 3
Object 4

Answers

I think it’s Object 3
Hopefully this helps

What is the mass of 5.119 102 molecules of copper sulfate
(CuSO4)?

Answers

Answer:

Mass = 135.66 ×10⁻²¹ g

Explanation:

Given data:

Number of molecules of CuSO₄= 5.119×10²

Mass of CuSO₄= ?

Solution:

The given problem will solve by using Avogadro number.

1 mole contain 6.022×10²³ molecules

5.119×10² molecules ×1 mol / 6.022×10²³ molecules

0.85×10⁻²¹ mol

Mass in grams:

Mass = number of moles × molar mass

Mass = 0.85×10⁻²¹ mol × 159.6 g/mol

Mass = 135.66 ×10⁻²¹ g

A heat lamp heats a pot of water from below, heat is
transferred throughout the water in the pot, and a person puts
their hand into the water to warm it. Which of the following
types of heat transfer are occurring in this scenario?
a Conduction
b Radiation
C Convection
d All of the above

Answers

Answer:

i think it is D. All of the above

but i will check to see if it's right

Answer:

D all of the above

Explanation:

I got it right on my test

Geologists obtain indirect evidence about Earth’s interior by
a.
measuring pressure differences at Earth’s surface.
b.
estimating temperature inside earth.
c.
directly looking under the many layers.
d.
recording and studying seismic waves.

Answers

Answer:

I'm sure it's D.

Explanation:

They obtain evidences by recording and studying seismic waves.

How do you convert a temperature from Celsius to kelvin?

Answers

Explanation:

by adding 273.15K to the given value of temperature in Celsius degree.

example:

20℃ to Kelvin

[tex]T(K)=20℃+273.15K \\

=293.15K [/tex]

How could sinking a ship to create an artificial reef address the problem?
A.
More divers would come to the area to explore both reefs.
B.
Many divers would go to the artificial reef instead of the natural reef.
C.
There would be more places for new species to enter the ecosystem.
D.
There would be fewer places for marine organisms to live.

Answers

Answer:

C.  There would be more places for new species to enter the ecosystem.

Explanation:

The Shipwrecks established artificial reefs that address the problem of a natural reef.

The artificial reefs provide a stable growing area for corals, and habitat for fishes and new organisms along with food sources that is found in natural reefs. This helps to increase the growth of marine life.

Hence, the correct answer is "C.  There would be more places for new species to enter the ecosystem."

Ammonification is the formation of

Answers

Ammonification refers to chemical reactions in which amino groups (NH2) associated with organic forms of nitrogen are converted into ammonia (NH3) or ammonium (NH4+).

Which of the following correctly shows the word equation for the reaction of aluminum and copper oxide yielding aluminum oxide and copper?
A. aluminum + aluminum oxide → copper + copper oxide
B. aluminum + copper oxide → aluminum oxide + copper
C. aluminum oxide + copper → aluminum oxide + copper
D. copper + aluminum → copper oxide + aluminum oxide

Answers

Answer:

The correct answer is B

Explanation:

Educere

aluminium + copper oxide → aluminium oxide + copper. Hence, option B is correct.

What is a word equation?

A word equation represents a chemical reaction using the names of the substances involved.

aluminium + copper oxide → aluminium oxide + copper correctly shows the word equation for the reaction of aluminium and copper oxide yielding aluminum oxide and copper.

Hence, option B is correct.

Learn more about word equations here:

https://brainly.com/question/2602833

#SPJ2

This is actually fun. First comment is brainliest.

Answers

Yo yo yo yo yo me please

Answer:

sup, how ya doin?

Explanation:

The energy levels of an atom are occupied by
A.electrons
B.protons
C.neutrons
D.ions

Answers

Answer:

A: electrons

Explanation:

las diferencias fundamentales del entramado urbano antes y despues de 1750​

Answers

Answer:?

?Explanation:

The movement of an object toward earth Soley because of gravity is called

Answers

Answer:constant acceleration. A steady change in velocity.

Explanation:

A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 12 seconds, and reaction B is completed in 21
seconds. What can you conclude about the rates of these reactions?
A. The rates of reactions A and B are equal.
B. The rate of reaction A is lower.
C. The rate of reaction B is lower.

Answers

Answer:

c

Explanation:

because the left side of reactant is take more time to make a product than the first

The rate of these reactions should be considered as the option b. The rate of reaction A is lower.

Conclusion of the rate of reactions:

Since Reaction A is completed in 12 seconds, and reaction B is completed in 21 seconds.

So based on this, we can say that the rate of reaction A should be lower as it contain 12 seconds as compared to reaction b.

hence, the option b is correct.

Learn more about reaction here: https://brainly.com/question/4241156

Which of the following is an element?
A
MgBr

B
HCl

C
O

D
Cu(SO4)3

Answers

Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at room temperature.

Define compound in your own words

Answers

Answer:

I think the compound is a chemical bound the compound o cant say I trying

Explanation:

oh the compound is a chemical substance like atoms like H2O and other atoms they have many compounds I think this should be ans

if its ans is too long you want then tell me in comment

Is it a model answer key

Answers

Answer:

is what a model answer key

I am going to go with yes. Imao

a covalent compound that shares two pairs of electrons.
What is it?

Answers

The two oxygen atoms share two pairs of electrons, so two covalent bonds hold the oxygen molecule together

in which shell duplet rule is applied, why?​

Answers

Answer:

In first shell duplet rule is applied because first shell contains maximum 2 electrons

Explanation:

You all should know that...

you guys are amazing
I just wanted you to know that
that's it
you can stop reading
why are you still reading?
I said that was it so why are you reading
stop reading
I said stop!
ok fine
well if your gonna keep reading you might as well hear this
jk im not writing anymore
that was all it was
JK AGAIN!
you are all...
wonderful
smart
beautiful (inside and out)
loved
and cared for
so don't go
you gotta be here
you gotta be here to spread your amazingness
because you are a queen/king

Answers

Answer:

Thank you I needed this

you are...

wonderful

smart

beautiful (inside and out)

loved

and cared for

so don't go

you gotta be here

you gotta be here to spread your amazingness

because you are a queen/king

YES YOU ARE and SO IS EVERYONE ELSE, I HOPE YALL ALL STAY SAFE AND HAVE A GREAT DAY >-<

why is an atom electrically neutral​

Answers

When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral
Because it has equal no.of electrons and protons

Question 3
When an electron absorbs energy and jumps it is:
a negative ion
in the ground state
a positive ion
in the excited state

Help please

Answers

Answer:

in the excited state

Explanation:

Because in excited state an atom has more energy

in the excited state

In the reaction A + B -> C + D, what are the products?
A. A and B
B. A, B, C, and D
C. C and D
D. A and C​

Answers

C and D are the products. Because A and B would be the reactants

Answer:

C

Explanation:

just took the test

Why is no chemical reaction necessary to extract gold?
​

Answers

Explanation:

Because gold is a very unreactive metal and exists as a pure substance (instead of oxides).

As such, no series of chemical reactions can ever create gold. Chemical reactions change the number and shape of the electrons in an atom but leave the nucleus of the atom unchanged. The ancient alchemist dream of creating gold by simply reacting chemicals is therefore impossible

Our digestive enzymes are able to break the alpha linkage in potatoes but not the ?? Linkage in paper

Answers

Answer:Beta

Explanation:

I watched the video and I got it wrong, the right answer was beta. I can’t explain why because I’ve already forgotten lol

Digestive tract have digestive enzymes which are not able to break beta linkages as  humans do not have enzymes which breakdown beta linkages.

What is digestive tract?

It consists of the gastrointestinal tract along with the accessory organs which are present in digestion process . It involves the breakdown of complex food into smaller components which can be easily assimilated and absorbed by the body.

The digestion process has 3 phases: cephalic phase , gastric phase and intestinal phase.Cephalic phase begins with secretion of gastric juices from gastric glands in response to sight and smell of food.It involves chewing and chemical breakdown of food by the action of digestive enzymes ,saliva in the mouth contain enzymes like lipase and amylase which are secreted by the salivary and serous glands present on the tongue.

Learn more about digestive tract,here:

https://brainly.com/question/28990432

#SPJ2

Determine the change in energy when an electron transitions from n= to n=5?

Answers

Answer:

ΔE  = 13.056 ev

Explanation:

Energy associated with nth state is,

En =  -13.6/n²

For n = 1

E₁ = -13.6 / 1²

E₁ = -13.6/1

E₁ = -13.6 ev

Kinetic energy of electron = -E₁ = 13.6 ev

For n = 5

E₅ = -13.6 / 5²

E₅ = -13.6/25

E₅ = -0.544 ev

Kinetic energy of electron = -E₅ = 0.544 ev

Wavelength of radiation emitted:

ΔE = hc/λ = E₅ - E₁

by putting values,

ΔE  = -0.544ev  - (-13.6 ev  )

ΔE  = 13.056 ev

If an atom has a mass number of 52 and has 28 neutrons, what is the atomic number?

Answers

Answer:

24

Explanation:

52-28=24

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During the invasion of the Kalinga inthe east, Ashoka was known asA. brutalB. kindC. uninvolvedD. tolerant A raised, flat area that is higher than the land that surrounds it is a __________. A. cape B. plain C. basin D. plateau Please select the best answer from the choices provided A B C D What was the social structure in each of the civilizations? The question of ________ arises when considering the way in which online marketers gather consumers information over the Internet without their consent.() Research() Theories() Science() Ethics Almost daily, Ginny would find cats that needed rescuing or, in some cases, a little love.What point does this line illustrate? That Ginny had a very permissive owner That Ginny had some trouble finding cats in need That Ginny helped cats in a variety of needy situations That Ginny went out daily looking for cats in needPLS HELP PLEASE, PLEASE IM BEGGING YOUWhich of the following best defines an input? (4 points) aAn input is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph. bAn input is a special type of relation for which there is a rule that pairs each input with exactly one output. cAn input is a set of ordered pairs in which no y-value repeats. dAn input is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph. I need a answer to the picture provided by me. Write the equation of the line that passes through the points (-7,1) and (7,-6).Put your answer in fully reduced point-slope form, unless it is a vertical or horizontalline. The sum of twelve and six times a certain number is forty-two. Find the number. Please help quickly thanks Hey can someone help me do this please, Thanks :) Do you feel stem cell research is important? Explain.4 sentences. A real estate agent would like to predict the selling price of a single-family house by predicting the price (in thousands of dollars) based on the square footage (in 100 square feet). Predict the price of a 3000 square foot house (in thousands of dollars). The indirect and direct methods Multiple Choice Are two allowable methods to present operating activities in the statement of cash flows. Affect the presentations of operating, investing, and financing activities. Arrive at different amounts for net cash flows from operating activities. Are used by companies about equally in actual practice. (20 PTS) WILL GIVE BRAINLIST Can anyone please help with either of these problems?? i need it done asap! thank you in advance! read what some high school students wrote about their elementary school days. Based on what they wrote, decide if each child was: a) bien educado, b) travieso, or c) timido, and write a, b, or c in the spaces provided Write 1.2 as a fraction or mixed number. can someone help meeeeeeeee please Abbie has to do 25 math problems tonight. She has completed 40%. How many problems has she completed?