was
4. When a 1.25-gram sample of limestone, that contains CaCO3 (molar mass = 100 g/mol) and inert impurities
dissolved in acid, 0.22 grams of CO2 was generated (molar mass = 44 g/mol). What was the percent of CaCO3 by
mass in the limestone?
CaCO3 + CO2 + CaO
(a) 20%
(6) 40%
(c) 67%
(d) 80%
(e) 100%

Answers

Answer 1
the answer to this is a. 20%

Related Questions

Read the temp what is it?
17.3 or 17.25??

Answers

Answer:

I would say 17.25.

Explanation:

17.25 would be ur answer

Round the following number to 3 significant figures:

15937

pls helpppp

Answers

Answer:

15900

Explanation:

I think hope this helps!! :D

Answer:

15900

Explanation:

An organism whose cell contains a nucleus.

Answers

Answer:

Eukaryotes

Explanation:

3 of 12
Assessment: Force and Motion CBA
Four students recorded the time it took them to walk to school from their homes as shown in the table
below.
Student
1
2
3
Motion of Four Students
Distance (meters) Time (minutes)
1,100
20
1,026
19
848
16
795
15
4
Which student had the greatest average speed?
Student 1
Student 2
Student 3
Student 4
1
2
3
4
5
6
7
8
9
10
Next

Answers

The answer is 1,026 students hope this helps

How are the testes and the ovaries similar?

They are part of the human skeleton.
They are reproductive organs.
They are sensory organs.
They produce sperm.

Answers

They are reproductive organs
I think it is “they are reproductive organs

define the term pure substance​

Answers

Answer:

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. Pure substances are further classified as elements and compounds. An element is a substance that consists of only one type or kind of atom

Answer:

define the term pure substance​ :

A pure substance does not have to be of a single element or compound, This can either be one single element or one single compound, but every sample of this substance that you examine must contain exactly the same thing with a fixed, definite set of properties

Explanation:

Would a rollercoaster have the greatest kinetic energy at the top of the highest hill or at the bottom on the highest hill

Answers

Answer:

The rollercoaster has the lowest kinetic energy at the top of the hill.

The rollercaoster has the highest kinetic energy at the bottom of the hill.

Explanation:

The kinetic energy of any solid body in motion is usually computed using this formula:

K.E = [tex]\frac{1}{2}mv^2[/tex]

From this, we can see that it varies based on two major parameters - The mass of the moving object and the velocity of the moving object.

We can assume that the mass of the rollercoaster is constant since no one gets off and it does not shrink in its size during the ride.

This means that the variations in the K.E are mainly coming from its velocity.

At the top of the hill, the rollercoaster is moving at its slowest pace. hence, it has the lowest kinetic energy at the top of the hill.

However, at the bottom of the hill, the rollercoaster is moving its fastest, hence it has the highest kinetic energy at the bottom of the hill.

Which of the following accurately describes the orbital path of most planets in our solar system?

The orbital path is in a perfect circle.

The orbital path looks circular.

The orbital path is in a large elliptical shape.

The orbital path varies greatly from planet to planet.

Answers

It is in a large elliptical shape!

What does the charge tell you about an atom?
Brainliest!!!!!!

Answers

Answer:

The charge will tell you if the atom is neutral, positive, or negative. "The charge of an atom is the number of protons minus the number of electrons."

Which sediments are carried by suspension?

Answers

Answer:

Sand and silt can be carried in suspension.

Explanation:

For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.

explain what is meant by an exothermic reaction and write balanced equation for any two exothermic changes

Please do not answer from links
Please answer correctly
Urgent

Answers

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \red{ \underline{ \large \orange{\tt{ ꧁ A \: N\: S \: W \: E \: R ꧂}}}}[/tex]

✧ [tex] \large{ \red{\tt{E\:X \: O \: T \: H \: E \: R \: M \: I \: C \: \: R \: E \: A \: C \: T\: I \: O \: N}} : }[/tex]

☃ The chemical reaction in which heat is released to the surroundings is called exothermic reaction. The amount of heat energy released is written along with products. This indicates that heat is given out.

[tex] \pink{ \text{Any \: two \: balanced \: equation \: for \: Exothermic \: changes}} : [/tex]

C + O₂ ⇾ CO₂ + HeatCaO + H₂O ⇾ Ca ( OH )₂ + Heat

ツ Hope I helped! ♡

☂ Have a wonderful day / night ! ☄

[tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex] ✎

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Can someone help me with this

Answers

Answer:

4.

A. Alkali

B. Alkaline

C. Transition

5. True (it is extremely powerful especially when reacting with water)

Explanation:

How many moles are in 100.0g of gold

Answers

0.50769... It is just the 100g divided by golds molar mass, which is 196.97

Which statement regarding this equation is TRUE?

4Fe (s) + 3O2 (g) —> 2Fe2O3 (s)

There are 2 reactants.


The coefficient on O2 is 8.


Iron (III) oxide is a gas.


There are 5 atoms of oxygen on the reactant side.

Answers

Answer:

iron (III) oxide is a gas

The answer to this question

Answers

Answer:

C. seems to be the answer as ionic comlopunds have high melting points becuase of the anion cation bond which is not seen in covalent bonds that share electrons in polar arragnements.

Explanation:

Answer:

I think is B hopefully is

An alpha particle is identical to a:

helium nucleus
hydrogen nucleus
high energy electron
radium nucleus

Answers

The answer is
Helium
Hope this helped

Answer: helium nucleus

what element has 5 protons, 7 electrons, and 6 neutrons

Answers

Answer:  Boron

Explanation: lol

Answer:

Boron. (What kind of name is that?????????????)

Explanation:

what are the respective coefficients needed to balance the equation below _N2(g) + _H2(g) --> _NH3(g)

Answers

This is the answer:
N2+3H2=2NH3

In the balanced equation, the mass of reactant is exactly equal to the mass of product. The respective coefficients needed to balance the equation is N₂(g) + 3H₂(g) ⇒ NH₃(g) .

What is balanced equation ?

A chemical equation that is balanced has equal amounts of each element's atoms on both sides of the equation and conserves mass.

Because mass cannot be generated or destroyed, according to the rule of conservation of mass, a chemical equation must always be in balance.

The Law of Conservation of Mass is followed by a balanced equation. This is a crucial scientific guiding principle. Finally, a balanced equation enables us to forecast the quantity of reactants and products that will be produced. Sort of crucial if you're attempting to determine how much fuel to supply a spacecraft traveling to Mars

Thus, the balanced equation is N₂(g) + 3H₂(g) ⇒ NH₃(g) .

To learn more about balanced equation, follow the link;

https://brainly.com/question/7181548

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What will happen to the Sun in approximately 5.5 billion years?

Answers

Answer:

This lifespan began roughly 4.6 billion years ago, and will continue for about another 4.5 – 5.5 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.

Explanation:

Got this from the internet lol

How is a sound wave transmitted? Please help me I have a test.

Answers

Answer: energy is transferred through vibration of air particles or particles of a solid through which the sound travels.

Answer:

Sound is transmitted by vibrating a object and the waves move through particles.

Explanation:

URGENT!!! PLEASE HELP!!!

file:///home/chronos/u-83abb8ba8be89334c9d7433161c45cb8ec059a4c/MyFiles/Downloads/The_Strange_Case_of_Avogadro_Airlines.pdf

Answers

What is your question? Sorry ‘Cause I just don’t trust links anymore . Hope you understand. Feel free to tell me your question you are struggling with, and I’d be glad to help you.

Answer:

what is your question sorry cause I don't trust hope you understandanymore feel free tell me your question you are struggling with l be glad to help you



The substances below are listed by increasing specific heat capacity value. Starting at 30.0 °C, they each absorb 100 kJ of thermal energy. Which one do you expect to increase in temperature the most? (3 points)




a


Silver, 0.239 J/(g °C)


b


Aluminum, 0.921 J/(g °C)


c


Lithium, 3.56 J/(g °C)


d


Water, 4.184 J/(g °C)

Answers

Answer:

the answer is B

Explanation:

Q3. When copper (II) chloride reacts with silvernitrate, copper (II) nitrate and silverchloride are formed.Write the balanced equation for the reaction given above:A.CuCl2(aq) + 2 AgNO3(aq) →Cu (NO3)2(aq) + 2 AgCl(s)B.CuCl2(aq) + NaNO3(aq) →Cu (NO3)2(aq) + AgCl(s)C.CuCl2(aq) + 2 NaNO2(aq) →Cu (NO2)2(aq) + 2 AgCl(s)D.CuCl(aq) + NaNO3(aq) →Cu NO3(aq) + AgCl(aq

Answers

Answer:

See explanation

Explanation:

When we are writing chemical reaction equations, we must ensure that such equations are balanced. That is, the number of atoms of each element on both sides of the reaction equation are exactly the same.

After we identify the formula of each compound in the reaction, then we proceed the write the balanced reaction equation as follows;

CuCl2 + 2AgNO3 -------> Cu(NO3)2  + 2AgCl

Acid HX has a very large Ka. How will the relative amounts of H+ and HX
compare at equilibrium?
A)The concentration of H+ will be larger than HX
B)The concentration of HX will be larger than H+
C)The concentration of HX will be equal to H+

Answers

The right answer is A

please help me asap. NO LINKS I WILL REPORT YOU!!!!

the galvanometer is not measuring any electricity despite all wires being hooked up. Why could this be?

Answers

Answer: you can find out information about Wheatstone bridge.

Explanation: maybe resistors are adjusted such a way that current through

Galvanometer is zero. There is no picture.

Answer:

mmh maybe the connections arent right

Explanation:

coz when u mess up even a bit current wont flow

The attraction between water molecules and a Nation or a Clion occurs because water molecules are —
A.
nonpolar
B
symmetrical.
С
polar.
D
linear.

Answers

Answer:

answer is

c. Polar

hope this helps

1. Which of the following would not be a good way to describe a body system?
A. Body systems are like computer programs that have to communicate with each
other in order to make the computer work.
B. Body systems are like runners in a marathon who each run alone and don't need the
other runners to finish the race.
C. Body systems are like machines with many different moving parts.
D. Body systems are like individual parts of one big story.

Answers

Answer:

the answer would be b

Explanation:

the body sytsem needs to depend on eah other in order to work

Body systems are like runners in a marathon, who each run alone and don't need the other runners to finish the race, is not a good way to describe a body system, hence option B is correct.

How body systems work together?

Your digestive tract takes nutrients and water from the food you eat in to your body. The body's cells receive oxygen, water, and nutrients through your circulatory system.

Your skin, excretory system, and respiratory system all function to remove wastes from your cells.

Your body's many systems depend on one another to function properly. While your heart's muscles require oxygen from your lungs to beat, your respiratory system depends on your circulatory system to distribute the oxygen it collects.

Therefore, option B is correct.

Learn more about body systems, here:

https://brainly.com/question/13258877

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What is the formula for pH?

Answers

Answer:

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].

Example: Find the pH of a 0.0025 M HCl solution.

1. What is the symbol for atomic mass? What are the units of atomic mass in terms of atoms? 2. What is the symbol for molar mass? What are the units of molar mass? 3. What is the atomic mass of iron, with units? 4. What is the molar mass of iron, with units? 5. What is formula mass? What are the units of formula mass? 6. What is the formula mass of sodium bicarbonate, with units? 7. What is the molar mass of sodium bicarbonate with units? 8. What is the molar mass of water? 9. What is the molar mass of ammonia, NH3? 10. What is the molar mass of lithium oxide? 11. What is the molar mass magnesium bicarbonate? 12. What is the molar mass of cobalt(III) carbonate?​

Answers

i am NOT gonna read all of that

NaOH + HCI → NaCl + H20
*double replacement
*single replacement
*synthesis
*combustion

Answers

Answer: a double replacement

Explanation:

Other Questions
2. What is the proper way ofwashing hands?I suppose__________ I wrote these, and was wondering which one was better....ProlougeFairies are wonderful creatures, filled with light and joy. With little silky wings and anglelic voices. They dance on the wind and fill the skies with laughter. But within them lies a darkness, like all creatures have. And when you hurt them, the darkness takes over. their wings turn black and sharp, their light turns to shadows and their voices turn to screams, They hold to hate and anger, to all the dark things that swim in mens minds, they know joy no more, and they wish to steal yours. So, Please heed my warning. and I will tell you a story, anout a fairy whom was betrayed, a fairy who lost her way, a fairy whos tears stained the world.Chapter oneHer feet skim the forest floor, her hands brush the trees, her eyes close and her lips sing. slowly she rises, her feet no longer on the ground. Her hands drop to her side but her fingers splay out and dance to her song. She twirls with grace and rises, higher, higher, higher. And following her, little bodies of light, singing a song, only they remember. They swirl around the girl and kiss her cheeks, she smiles and slows to a stop, just hovering there, above the treetops. The fairies whisper in her ears and giggle holding out their little hands, expectant. The girl laughs, a beautiful, hypnotic sound. "Shh, my little friends, here you are. Quiet now. share, would you?" She hands them crumbs of cake, velvet and chocalate and all the flavors of the wonderful substance. The fairies smile and their tinkiling filles her ears. "Yes, i know. you won, you caught up to me - but it IS harder to be faster, seein how i'm bigger than you and all." they circle her head and perch on her shoulders "But soon i'll be faster than all of you. and not even the ancient peter pan could catch me!" she smiles with the thought and slowly drifs down to the forest once more. Waving goodbye to her little friends, she races again though the forest, her feet not touching the ground.OR....She shuffled her feet and sighed, making it quite obvious that she was upset. The caseworker didn't respond. Of course. Why would she? She was only uprooting her life again. Home-hopping wasn't fun. . She had been in what? Three homes in the past year? She tried to be good, be the best. But she obviously wasn't good enough. she must have done something wrong. Something must have made them not want her. She just didnt know why she wasn't good enough. She fiddled with her name tag, which read Aria, or it was supposed to, it actually spelled Area. Sighing again she tried for a more vocal approach."Ahem." She raised an eyebrow, trying to hide the sour sting in her heart. the caseworker finally looked up "What? You hungry? Thirsty?" She shook her head after a second "Just sit still, we will have you relocated soon enough." Relocated? Was she a dog? "I was just gonna ask why i have to leave another house." The caseworker sighed "Because of...Difficulties." Aria frowned thats all they ever said. "difficluties." She hadn't relized she said it out loud until the caseworked sighed louder than she had before. "Listen, it just didn't work out. You'll be in a new home soon." Aria clenched her jaw "It's not really a home when you only live there for four months." This time the caseworker ignored her. So Aria leaned back in her seat and closed her eyes. wringing her hands until they turned white. When she opened them again the sky had turned to a pink shade, and she watched for a second as it slowly sank towards the ground. She glanced around and met the eyes of her annoyed caseworker, who obviously wanted to go home. "Get up. You're sleeping here toninght.""What-?" Aria clenched her hands, digging her fingers into her palm."I said you're sleeping here." she jabbed a finger towards a room, the door was slightly ajar and inside was a table a couple chairs and a couch. Aria frowned "On a couch?" the caseworker nodded "I'll be in the next room."please read it all and tell me which one was your favorite and why! :) The Great Pyramid was once the worlds tallest structure? True or False I need help please!! Name the type of component that has a greater resistance as the current through it increases A farmer is worried that a recent salmonella outbreak may have come from the carrots on his farm. He wants to test the carrots at the farm, but it will ruin the crop if he tests all of them.a. If the farm has 10,000 carrots growing, describe a method that wouldproduce a random sample of 10 plants.b. Why would a random sample be useful in this situation? What is the slope of the line thatpasses through these two points?(1, 2)(2, 8)(x1.y) Slope =rise (y2-y)Remember, given two points,(x2:y2) run (x2-x1) PLEASE ANSWER ASAP! NO SCAM LINKS! OR REPORTED. Whats the answer???? Corbin can shoot 24 baskets In 3 minutes. Which table bestrepresents this relationship? Johnny was able to drive an average of 29 miles per hour faster on his car after the traffic cleared. He drove 30 miles in traffic before it cleared and the drove another 176 miles. If the total trip took 6 hours, then what was his average speed in traffic? consists of one or more ingredients that are stacked, layered folderd within or on the structure to form the sandwich Convert 456,300,000 to scientific notation. help me with this plsss 4z + 8 - 6= 7z 4 + 5x=y (3z) = I NEED HELP :( Define the law of conservation of charge and provide an example.Define opposite charges attract and like charges repel and provide an example. Define Electricity along with an example. What is the measure of x? How did southern states respond to Nat Turners rebellion? help i need this to be answerd x/3 less than or equal to 7 At the state fair, admission at the gate is $9. In addition, the cost of each ride is $2. Suppose that Reuben will go on x rides.Reuben wants the total number of dollars he spends on admission and rides to be fewer than . Using the values and variables given, write an inequality describing this.