Chemistry Middle School

How many different elements are involved in the reaction shown? Record the answer in the grid. Plz help :))

How Many Different Elements Are Involved In The Reaction Shown? Record The Answer In The Grid. Plz Help

Answers

Answer 1

Ca=Calcium

Ci=Iron

Ag= Silver

No-Nobelium

Related Questions

A chemist is using 341 milliliters of a solution of acid and water. If 16.1% of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.

Answers

We need to assume that the acid in question is a liquid (not a solid or a gas),

and we need to assume that the 16.1% is specified as 16.1% (v/v) ,

where "v/v" means volume in volume,

meaning 16.2 milliliters of that acid are contained in 100 milliliters of the solution of acid and water.

With those assumptions, the ratio of acid volume to solution volume is

x/342 = 16.1/100 , where x= number of milliliters of acid in the 342

milliliters of solution.

x/342 = 16./100 ---> x=342x16.1/100 ---> x=55 (Rounded)

Would the following atoms have similar reactivity?

A) Elements in Group 2 have 2 energy levels.

B) Elements in Period 7 have 7 valence electrons.

C) Elements in Group 13 have 13 valence electrons.

D) Elements in Group 13 have 13 valence electrons.

Answers

I think D, not sure though!
Ur answer is d elements is group 13 have 13 valence electrons

discord anyone? RaTqUeEn2#8785

Deforestation is the __________.
A.
cutting down or burning of all the trees in a forested area
B.
replanting of trees in an area where trees were cut down
C.
managing of forests for the benefit of people
D.
adding of nutrients to topsoil in order to make land more arable

Please select the best answer from the choices provided
A
B
C
D

Don't have to answer!

Answers

The answer would be letter A
The answer is A I’m answering because I need points

What is the influence of temperature on a chemical change?

Answers

Answer:

Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.

Explanation:

Please mark me brainliest

Acceleration due to gravity =


100 m/s2



9.8 m/s2



62.3 m/s2



1.2 m/s2

Answers

Answer:

9.8

Explanation:

no explanation bbbbnnnnnnnnnnnnnnnnnnn

9.8m/s2 is the correct answer

True or False: Thermal energy can not transfer when particles of matter are in direct contact with each other, as they are not in solids, liquids,or gases.

Answers

Answer:false

Explanation:

that would be false hope it’s right !!

When balancing a chemical equation, which of the following are you allowed to do?

Take away substances

Add coefficients

Change subscripts

Add new substances

Answers

You are only allowed to Add coefficients

Answer:

Add Coefficients

Explanation:

You CAN'T change the identity of an element or substance in an equation. You can only change coefficients.

Choose all the answers that apply.

Conduction _____.

is the transfer of heat in fluids
requires physical contact between molecules
is the transfer of heat in solids
happens because molecules cause each other to vibrate

Answers

happens because molecules cause eachother to vibrate
happens because molecules cause each other to vibrate

Infer How do you think these bones are involved in a whale’s movement?

Answers

I think that the bones involved in a whales movement help there tail move so they can swim
By keeping the muscle from flailing around and add support and stability when it moves its body,

European and North America coal fields line up.
A.true
B.false

Answers

Answer:

The Answer Is A

Explanation:

The edges of South America and Africa seem to fit together like a puzzle.
A.true
B.false

Answers

Answer: true

Explanation:

Answer:

It's true...

Explanation:

Which three temperature readings all mean the same thing?


273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit

100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit

273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit

373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit

Someone please help!

Answers

The last one is correct :)

Answer:

273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit

Explanation:

Fossils of tropical plants have been found in extremely cold regions.
A.true
B.false

Answers

false because they would freeeze
I think false it would have been gone by doing that

A period of inactivity in a plant, where it does not grow to survive unfavorable environmental condidtions

Answers

Answer:

Dormancy

Explanation:

dormancy is the correct answer

Plz HELP ITS SCIENCE!

Answers

Cell wall:
-acts like a skin
- most selectively controls what is inside and outside of the cell
-rigid

Cell membrane:
-gives a plant cell
-not rigid
Cell Wall
1) Acts like skin.
2) Rigid.
3)Gives the plant cell its shape.



Cell Membrane
1) is not rigid.
2) More selectively controls what goes in and out of the cell.

1. The ocean is also known as Earth's _____. *
A. evaported cloud
B. Giant Collector
C. Condensed Liquid
D. None o the above

Answers

Answer:

Earth is often called the ocean planet because it is 70% covered in water.

Explanation:

D.

D. none off they above because the ocean isnt a cloud it doesn’t collect things and its not condensed

How is science based on observation used as evidence? How can evidence be used?

Answers

Answer:

Explanation:

Researchers gather empirical evidence through experimentation or observation. Empirical evidence is information acquired by observation or experimentation. Scientists record and analyze this data. The process is a central part of the scientific method.

Answer:

Science Produces Explanations That Can Be Tested Using Empirical Evidence. Science requires that scientific explanations of phenomena be based on events or mechanisms that can be observed in the natural world. This is how science builds a base of shared observations and ideas to which new knowledge can be added.

Explanation:

___________________ can be renewable or nonrenewable.
isn't it fossil fuels? i'm not sure

Answers

Answer:

wood, aluminum, gemstones, fabric, paper, rock and many others can be renewable or nonrenewable.

Hope i get brainliest

Explanation:

Fossil fuels is indeed correct.

The formation of hurricanes, cyclones, and typhoons
A.true
B.false

Answers

True homie Bc I said it was
I say true aswell cause it makes sense

What kinds of changes happen to water as it goes through the water cycle? Are they physical or chemical?

Answers

Answer:

When water changes state in the water cycle, the total number of water particles remains the same. The changes of state include melting, sublimation, evaporation, freezing, condensation, and deposition. All changes of state involve the transfer of energy.

Explanation:

and its physical

Answer:

The answer is Physical

Explanation:

The changes of state include melting, sublimation, evaporation, freezing, condensation, and deposition. All changes of state involve the transfer of energy. They are all the same but no matter what state it's in it's still water so it's physical.

PLEASEE HELP ASAP WILL MARK BRAINLIEST
This is on Asexual reproduction and I don't understand this at all so pleasee help

Answers

Answer:A,A,b,b

Explanation:i think i am learning this right now too!

I believe it is A, A, C, D

Land bridges across oceans are used to connect all continents on earth.
A.true
B.false

Answers

Answer:

"A. True", is the right answer.

I’m going with him I believe it’s true

plz help .....................

Answers

Answer:

1. conduction

2. radiation

3.convection

4. conduction?

5. radiation

6. convection

7. convection

8. convection

9. radiation

10.radiation

(sorry if they aren't all correct)

What kind of change, physical or chemical, is happening when wood burns? How can you tell?

Answers

Answer:

Wood changes chemically to carbon dioxide when it burns and leaves a residue of ashes. These ashes cannot be changed back to wood. So it is a chemical change.

chemical
physical means it can go back to its shape; chemical it cannot.
for example when wood burns you can’t get that wood back to before it was burned!

hope this helps!

I need help QUICKLY!!!!!!!!

Answers

Answer: Do you take Ms. Reyes

Explanation: The answer is Outside air, Nose, Lungs, Bloodstream, Cell

Answer:

outside air

nose

lungs

bloodstream

cell

What are the 3 most important ecosystem services of a coral reef
1: Home to housands of species of fish, plants, and turtles

2: Corals provide treatments to human illnesses.

3: Reduces wave energy and helps protect against tsunamis

4: Heats up the planet.

5: Provides a good source of tacos.

Answers

2 Corsls provide treatments
1. Home to thousands of species of fish plants and turtles
2. Corals provide treatments to human illnesses
3. Reduces wave energy and helps protect against tsunamis
The other two answers aren’t true and don’t make sense

which one should I go in ??????

Answers

Answer:

the hatchery I think

Explanation:

because i think

Which of the water alternative energy source has an energy transfer chain of GPE-->KE-->EE?

Answers

Um what’s the question?
Elastic Potential Energy. Uses Gravitational potential energy, kinetic energy and EE.

The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a

Answers

Answer:

I guess c?

Explanation:

take my answer by a grain of salt but the process of boiling water leads to physical change because eventually all water will become water vapor if boiled long enough

C is the answer to this question hope it’s right

2. A change in velocity (speed and/or direction) is... *
A.speed
B.Velocity
C. Acceleration

Answers

acceleration cause that is a magnitude
the answer is acceleration
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