Chemistry High School

A student heats a LaTeX: 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube when the reaction is complete?
CaCO3(s) to CaO(s) + CO2(g)
Select one:
a) 1.4 g CaO
b)2.1 g CaO
c)2.5 g CaO
d)1.0 g CaO

Answers

Answer 1

Answer:

2.5

Explanation:

Answer 2
I got answer ‘a’ (1.4g)
A Student Heats A LaTeX: 2.5 G Sample Of Calcium Carbonate In A Test Tube. What Mass Of Calcium Oxide

Related Questions

What is the relationship between the circulatory and respiratory systems?
A. They work together to store the waste that blood collects from the body.
B. The circulatory system provides oxygen that the respiratory system uses to fill the lungs
C. The respiratory system provides blood that the circulatory system uses to transport nutrients.
D. They work together to supply oxygen to tissues and rid the body of carbon dioxide​

Answers

Answer:

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart

Explanation:

This should help you out

I think it’s (A) I’m not sure

what are the materials needed during photosynthesis?

Answers

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.

which line represents the gas state?​

Answers

Answer: F : Gas

Explanation:

The answer to the question is just plain gas which is F

Giving brainliest !!!

Answers

Answer:

a and i thinkc

Explanation:

write down the cell equation. please​

Answers

Answer:

see explanation

Explanation:

symbiology is (oxidation rxn || reduction rxn)

=> Zn°|Zn⁺² || Cu⁺²|Cu° => Zn°(s) + Cu⁺²(aq) => Zn⁺²(aq) + Cu°(s)

which description shows copper at rtp?​

Answers

Answer:

It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish. It is found in group Ib of the periodic table, together with silver and gold. Copper has low chemical reactivity.

how dose the scientist know the substances goes through a change of state during the time period labeled B on the graph?

Answers

Answer:

The temperature remains constant

Explanation:

In a plot of temperature against time, it is easy to spot the points on the graph where a change of state is taking place.

During a change of state, the temperature does not not change with time. These are points that are plateaus on the temperature-time graph.

This is because, during phase change, the heat that is added is used in breaking intermolecular forces therefore a temperature change is not observed until the phase change is complete.

URGENT !! PLEASE ANSWER !!
Is C-O a nonpolar or polar covalent bond? why?

Answers

I’m pretty sure it’s polar covalent bond

Indicate whether each statement is true or false: a. Substitutional alloys tend to be more ductile than interstitial alloys. b. Interstitial alloys tend to form between elements with similar ionic radii. c. Nonmetallic elements are never found in alloys.

Answers

Answer:

Substitutional alloys tend to be more ductile than interstitial alloys. true

Interstitial alloys tend to form between elements with similar ionic radii.false

Nonmetallic elements are never found in alloys. false

Explanation:

Substitutional alloys consists components having similar atomic(ionic) radii as well as common bonding characteristics. In interstitial alloys, atoms in interstitial positions must have a much smaller covalent radius than the solvent atoms. Interstitial atoms are generally less ductile than substitutional alloys.

Nonmetals are found in alloys. For instance, carbon is a component of the common alloy called steel.

explain why the weight of an object changes if taken to the moon but not its mass​

Answers

Answer:

Because the gravitational force alters

Explanation:

what information do the coefficients of a balanced equation give about the reactants

Answers

The information that the coefficients of a balanced equation give about the reactants are to tell how many moles of reactants are needed and how many moles of product can be produced.

Which element’s atoms have the greatest average number of neutrons?

Answers

Answer:

53

Explanation:

the atomic number is 53, then Number of neutrons=127-53=74 Since, the number of neutrons are large in Tellurium, therefore Tellurium have the greatest average number of neutrons.

How many atoms of aluminum (Al) are in 3.94 mol of aluminum

Answers

Answer:

26.9

Explanation:

that is my answer I try to it

please helppppp w the picture

Answers

kidkrkrrirorkreekeekerkrirr

Which of the following groups of elements has two valence electrons and is highly reactive?

Select one:
a. Alkali metals
b. Alkaline-earth metals
c. Halogens
d. Noble gases

Answers

B, Alkaline earth metals

35.46 g silver nitrate reacts with 52.61 g sodium chloride to produce silver chloride and sodium nitrate.
How much silver chloride solid will be produced?

Answers

Here are the steps hope it helps

Long form EC for Aluminum

Answers

Here is the answer.

Plz help!

What must change in order to change the amount of power?

Answers

Answer:

Mass

Explanation:

hi !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Lol hiiiii...... :) wasssupp

Hahaha hey! What’s up!

Look at position 2 on the roller coaster
Is there more potential or kinetic energy , why ?

Answers

Potential. Technically the car isn’t in motion at point 2 and is using the kinetic energy from the drop of point 1

The chlorophyll processes the ingredients to make
(plant food) and

Answers

The chlorophyll processes the ingredients to make

(plant food) and

Answer:

oxygen

Explanation:

What voltage will produce 3 A through a circuit that has 15
ohms of resistance?

Answers

Answer:

5 ohms of resistance

Explanation:

15/3=5

answer
5
because
3 divided by 15 is 5

Why are prefixes not needed in naming ionic compounds?

Answers

Answer:

its A

Explanation:

Answer:

C. Ions combine in only one ratio

Explanation:

Just took the quiz

For the elements in the "f-block," how is the row number related to the principal energy level for the last orbital notation of their electron configurations?"

Answers

Answer:

See explanation

Explanation:

Given that the row number is the same as the period or energy level(shell) in which the electron is found.

If we designate this row number as "n", we know that the  highest principal energy level for the f orbitals is obtained as (n-2) f.

Thus, we obtain the highest principal energy levels for the "f block" elements by subtracting 2 from  the row number.

Which of these equations is balanced?

1. 4Sb + 3O2 → Sb4O6

2. H3 AsO4 → As2O5 + H2O

3. SiO2 + HF → SiF4 + H2O

4. CO2 + NH3 → CO(NH2)2 + H2O

Answers

Answer:

the first is the answer

___are organelles found in plant cells. They absorb energy from sunlight and use that energy to drive chemical reactions that produce sugars and oxygen.

Answers

Chloroplasts

Hope this helps !!

Iron is more reactive than copper. Write an activity to show this. Write word equation of the reaction involved.

Answers

Answer:

This can be proved by the following activity: Take some Iron fillings and dip them in the Copper sulphate solution. After some time you will notice that there is a colour change in the solution which is caused due to the displacement of Copper from it solution.

Explanation:

When are kids ready to assume adult responsibilities?

Answers

Answer:

18 years old or when they become mature.

Explanation:

explain what happens during the chemical reaction
CaCO3 -> CaO + CO2

Answers

check out this article i found it very helpful,

I couldn't find the answer to your question.

Define symbol ..........
​

Answers

Answer:

Hey mate here's your answer ⤵️

a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.

Hope it was helpfulll

noun: letter, character, sign of written communication

Something used for or regarded as representing something else; a material object representing something,

or a character of some kind

Example:

Often something immaterial; emblem, token, or sign: "$"<< the dollar sign is a symbol used to show / means money

Hope this kinda helped

Other Questions
Which of the following angles is one of the two reflexive interior angles inthis polygon?Pls help me The image shows a political cartoon titled "The Downfall of Mother Bank.According to this cartoon, what caused the downfall of the national bank?the removal of federal depositsincreased tariffs on importsincreased taxes on bank interesta refusal to pay down the federal debt Mrs. Crimm signed up to bring two dozen cupcakes for the school bake sale. She made one dozen, but her children ate 3 of the cupcakes. Which of the following could be used to determine c, the number of cupcakes Mrs. Crimm needs to bake? what are some similarities and differences between Lieutenant Kotler and Pavel? Simplify hurrryyyyyy pleaseee The scatterplot and trend line show the number of passattempts and passing yards a football team had duringseven seasons.Because none of the data points lie on the trend line,you must find two points on the line.Point 1 can bePoint 2 can beUsing those twe (26, 2855) ope of theline is|Football Passing Statistics2875fy287028652860E285528502845(233,2850)(245, 2860)230 233 238 239 242 245 248 251 254257Pass AttemptsDone What is credited with ending the Great Depression?OA. Stock Market reformB. The New DealC. The Second New DealD. World War Il industry Which sentence best describes these two cell models?LoNoNolol colooABA. They have the same surface area, but model B has more volume.B. They have the same surface area, but model A has more volume.C. They have the same volume, but model B has more surface area.O D. They have the same volume, but model A has more surface area. Balance the following chemicalequation by providing the correctcoefficients.[? ]FeBr3 + []Na2S Fe2S3 + NaBr A major rite of passage for the Maori men of __________ was to receive ta moko, or facial tattoo help please will give brainliest The study of human culture and how it develops over time is calledA. anthropologyB. archaeologyC.paleontology You are moving to a new apartment and need to hire a moving company. Youve researched local moving companies and found these price options.Company Flat Fee Hourly RateCompany A $50 $25Company B $40 $30Company C $60 $20Company D $150 $5If you anticipate that it will take about 4 hours to move everything, what is the approximate percentage difference of the best and worst deals according to their unit costs?A. 16%B. 18%C. 19%D. 21% Please help me I am crying because I don't know Small computer systems interface and Universal serial bus ports are examples of _____ device Sports Autumn is being touchy and argumentative with her mother. She is displayingbehavior.O A. covert destructiveO B. covert nondestructiveC. covert nondestructiveD. overt nondestructive What are the three pairs of parallel segments in ABC? Dilate by a scalefactor of 1/2ALD Which of these helps you avoid debt by keeping your expenses below your income? A. A personal budget B. Liability insuranceC. Cost-benefit analysis D. A production possibilities frontier What can happen when tectonic plates move a few centimeters?A. The atmosphere can become cooler.B. Whole continents can move.C. The ozone layer can thicken.D. The moon can move closer to Earth. A 260-kg glider is being pulled by a 1,940-kg jet along a horizontal runway with an acceleration of a= 2.20 m/s^2 to the right. Find the following: a. the magnitude of the thrust provided by the jet's engines. b. the magnitude of the tension in the cable connecting the jet and glider Steam Workshop Downloader