If calcium carbonate (Cacos) decomposes. What would the product of the reaction be?


If Calcium Carbonate (Cacos) Decomposes. What Would The Product Of The Reaction Be?

Answers

Answer 1

Answer:

CaO

Explanation:

Group 2 Carbonates decompose to form oxides of the Group 2 element and Carbon dioxide


Related Questions

what's the atomic weight of salt ?

Answers

Answer:

58.44 g/mol

Explanation:

58.44 g/mol

One formula unit of sodium chloride (NaCl) would weigh 58.44 amu

What's a third reaction? (Chemistry)

Answers

Explanation:

a chemical reaction in which the rate of reaction is proportional to the concentration of each of three reacting molecules

57:17
A ball that has a mechanical energy of 65 J has 12 J of kinetic energy. The ball has blank
energy.
J of potential energy

Answers

Answer:

53 Joules

Explanation:

Applying the law of conservation of mechanical energy.

Law of conservation of mechanical energy: States that energy although, energy can not be transformed from one form to another, the total energy of the system remain the same.

I.e,

Mechanical Energy = E.K+P.E..................... Equation 1

Where E.K = Kinetic energy, P.E  = Potential energy.

From the question,

Given: Mechanical energy = 65 Joules, K.E = 12 J

Substitute these values into equation 1 and solve for P.E

65 = 12+P.E

P.E = 65-12

P.E = 53 Joules

PLS GUYS ITS FOR 10TH GRADE CHEM

Answers

Answer:

1. 2.63x10^6

2. 39.2

Both answers have been rounded

what are the main tybes of mixture​

Answers

Answer:

salt and oil

water and salt

water and sugar

Explanation:

Isotopes are atoms that have the same mass number, but different numbers.
atomic. True or false

Answers

Answer: Im not sure but I think it is false.

Explanation:

explain why crude oil is a fossil fuel​

Answers

They were formed from fossils

What is the temperature of 0.5 moles of water vapor that occupies 120 dm3 and applies a pressure of 15,000 Pa to its container?
A. 433.21 K
B. 5.19 K
C. 7.52 K
D. 108.3 K
Reset Selection

Answers

Answer:

The answer is C. 7.52 K

Explanation:

hope it helps

Which of the following describes a limiting reactant? Question 10 options: A) The reactant that runs out last and limits how much product can be made B) The reactant that is present at the smallest mass C) The reactant that runs out first and limits how much product can be made D) An inert element

Answers

Answer:

The correct choice is option C) The reactant that runs out first and limits how much product can be made

Explanation:

The limiting reactant is a reactant in a chemical reaction that gets consumed first and thus limits how much product can be formed.

Answer:

The reactant that runs out first and limits how much product can be made

Explanation:

Which would increase the reaction rate?
O A. Decreasing the reactant concentrations
B. Removing heat from the system
O C. Adding a catalyst
O D. Lowering the value of k

Answers

Answer:

C

Explanation:

C. Adding a catalyst would increase the reaction rate.

What is a catalyst?

A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur.

A catalyst enhances the probability of successful collisions between reactant molecules, which raises the pace of the reaction by offering an additional avenue for the reaction to occur.

As there would be fewer reactant molecules accessible to react with one another, decreasing reactant concentrations would result in a slower pace of reaction.

Due to the fact that chemical reactions often require energy to take place, eliminating heat from the system would also slow down the reaction rate. A lower value for k would result in a lower rate constant, which would lower the response rate.

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A pupil has drawn the electronic structure of fluorine and the diagram is shown below. However,
mistakes have been made. State three mistakes that have been made.

Answers

The first shell can only hold 2 electrons, but the pupil placed in 8 electrons.

The second shell can hold up to 8 electrons, but the pupil only placed in 2 electrons.

Flourine only has 9 total electrons, yet there are 10 electrons in the diagram.

Answer:

Explanation:

In the Fluorine atom there are 2 electrons in the innermost shell and 7 i the outer shell.

que chest pain
These may be signs of a serious condition. See your doctor
Ask a doctor before use if you have:
had heartburn over 3 months. This may be a sign of a more serious condition.
sfregent wheezina, particularly with heartbum
unexplained weight loss
Bea or vomiting
stomach pain
Ask a doctor or pharmacist before use if you are taking a prescription drug Acid reducers
may utteract with certain prescription drugs.
Stop use and ask a doctor it:
your heartburn continues or worsens
you need to take this product for more than 14 days
you need to take more than 1 course of treatment every 4 months
w you got diarrhea
you develop a rash or joint pain
I pregnant or breast-teeding, ask a health professional before uso.
Koop out of reach of children. In case of overdose, get medical help or contact a Poison
Control Center night away (1-800-222-1222).

Answers

Answer:

.........................okay?

Oh rip jdjdunejdnjdjehdbhxdhhdhdhhdhdhdhdd

The process during which cells of the body harness energy from food consumed by a living organism is ______________________.

Answers

It is called Cellular Respiration

Pesticides and fertilizers are a major cause of
O air pollution
O acid rain
o the greenhouse effect
O groundwater pollution


Answers

Answer:

it means air pollution Environment. The chemicals and nutrients found in fertilizers, while beneficial for agricultural crops, can be lethal in high doses for fish, birds and other wildlife. Pesticides, designed to kill pests chemically, are also dangerous when leached into soil or groundwater supplies.

PLS HELP!! WILL MARK BRAINLIEST! 99 POINTS!

Answers

You're going to first balance the chemical equation.

After that, convert the grams of Na into moles of Na, and then multiply that with the ratio of moles of NaCl to Na, and then convert the mol of NaCl into grams in order to obtain the theoretical yield, since we are given that Na is the limiting reactant.

After that, plug the values into the yield formula, doing some basic algebra, and you should get your result.

You're going to first balance the chemical equation.

After that, convert the grams of Na into moles of Na, and then multiply that with the ratio of moles of NaCl to Na, and then convert the mol of NaCl into grams in order to obtain the theoretical yield, since we are given that Na is the limiting reactant.

After that, plug the values into the yield formula, doing some basic algebra, and you should get your result.

How many grams of solute is there in 250 mL of a 0.10M CaCl2 solution ?

Answers

Answer:

2.775 g

Explanation:

Given that;

Number of moles = concentration × volume

Concentration = 0.10M

Volume =250 mL

Number of moles = 250/1000 × 0.10

Number of moles = 0.025 moles

Also;

Number of moles = mass/molar mass

Molar mass of CaCl2= 111 g/mol

Mass = Number of moles × molar mass

Mass = 0.025 moles × 111 g/mol

Mass= 2.775 g

hurry
A solution:

A. is a mixture that is made when a solid dissolves and combines with a liquid.

B. is the amount of a substance that will combine with another substance before they begin to chemically combine.

C. is the amount of a substance that will dissolve in 1 dm3 of water at 25 C .

D. is two or more substances that are combined together but not chemically joined.

Reset Selection

Answers

Answer:

b is the correct answer ok

A solution is made up of solute and solvent. It is an addition of two or more substances to each other that combines physically and chemically. Thus, option B is correct.

What is a solution?

A solution is the mixture of solutes that can be more than one in a solvent that has the same composition all over (homogenous). A solution comprises two main elements called a solute and a solvent.

A solute is the part of the solution that has been added to the solvent for desolvation. On the other hand, the solvent is the substance that dissolves the solute in them to make a solution.

The homogenous mixture or the solution can be created by mixing salt and water, sugar and water, mercury in amalgamated zinc, coffee, vinegar, etc.

Therefore, option B. a solution is the addition of the substances that combine physically.

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One the first chemistry test. 12 students got As, 18 students got Bs, and 20 students got Cs.

a. What is the percentage of students received Bs.

b. What is the percentage of students who received Cs?
Express your answer to the ones place.

Answers

Answer:

A. 36 percent recieved Bs

B. 40 percent of students received Cs

Explanation:

Amount of students: 12+18+20=50

Students with Bs: (18÷50) x 100 = 36%

Students with C's: (20÷50) x100 = 40%

On the first chemistry test 12 students got A, 18 students got B, and 20 student got C. Thus the percentage of students received B is 0.36 and percentage of students received c is 0.40

What is the percentage of students received B and C?

In mathematics, a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign %. A percentage is a dimension less unit and it has no unit.

In above question 12 student got A, 18 student got B, and 20 student got C.

So total number of student = 12 + 18 + 20 = 50.

Then the percentage of students received B is as follows:-

Percentage of students who got B = (student who got B/Total number of student) X 100.

=(18/50) X 100

= 36%

Now percentage of students who got C = (No of students who got C/Total students)X100

=(20/50) X 100

=40%.

Therefore,On the first chemistry test 12 students got A, 18 students got B, and 20 student got C. Thus the percentage of students received B is 0.36 and percentage of students received c is 0.40 percentage of students who got B is 36% and percentage of students who got C is 40%

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HELP PLEASE 15 POINTS

The rate law for a reaction is found to be rate = k[X]4. By what factor does the rate increase if [X] is doubled?

Answers

X is doubled by 5 and xk is in the fa

Which statement best describes what happens as thermal energy from the
sun warms the pavement?
A. The thermal energy absorbed by the pavement is destroyed.
B. The thermal energy that is not absorbed by the pavement is
destroyed.
C. Some thermal energy is absorbed by the pavement, and some is
destroyed.
D. The thermal energy of the sun is transferred to the pavement.

Answers

Answer:

D

Explanation:

The correct answer would be that the thermal energy of the sun is transferred to the pavement.

Thermal energy refers to the internal energy possessed by a system by virtue of the movement of molecules within such a system. In other words, it is the heat energy possessed by a system.

When the thermal energy from the sun warms the pavement, it means that the thermal energy from the sun has been successfully transferred to the pavement. Thermal energy can be transferred by conduction, convection, or by radiation depending on whether the system is a solid, liquid, gas respectively.

The correct option is, therefore, D.

Please help
I need answers now

Answers

Answer:

this is my answer.........

Scientific notation ? Please help


(5.55 x 10^15) x (8.88 x 10^18)

Answers

Explanation:

I first take back the numbers to their original forms that is to say (5.55×10^15) = 5550000000000000 and (8.88×10^18) = 8880000000000000000 therefore the difference of the two will be 887445 which is notated to (8.87445×10^5)

Answer: (8.87445×10^5)

What is the actual specific heat capacity of the silver in the Calorimetry Lab?


0.234 J/gK

0.133 J/gK

0.035 J/gK

0.023 J/gK

Answers

The actual specific heat capacity of the silver in the Calorimetry Lab is given as  0.234 J/gK.

What is specific heat capacity?

Specific heat capacity is the amount of heat required to raise a unit mass of a substance by 1 degree kelvin.

The specific heat capacity of silver or amount of heat required to raise a unit mass of silver metal is 0.234 J/gK.

Thus, the actual specific heat capacity of the silver in the Calorimetry Lab is given as  0.234 J/gK.

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equation for the reaction btn nitric acid and metal X whose valence is 3​

Answers

(a) Reaction of nitric acid with non-metal:
C+4HNO
3

⟶CO
2

+2H
2

O+4NO
2


S+6HNO
3

⟶H
2

SO
4

+2H
2

O+6NO
2


(b) Nitric acid showing acidic character:
K
2

O+2HNO
3

⟶2KNO
3

+H
2

O
ZnO+2HNO
3

⟶Zn(NO
3

)
2

+H
2

O
(c) Nitric acid acting as oxidizing agent
P
4

+20HNO
3

⟶4H
3

PO
4

+4H
2

O+20NO
2


3Zn+8HNO
3

⟶3Zn(NO
3

)
2

+4H
2

O+2NO

hope that helps you please mark brainliest

100cm³ of ethane gas diffuses through a porous plug in 100 seconds.What is the molecular mass of the gas Q if 100cm³ of the gas diffuses through the same plug in 121 secknds under the same condition?(C=12.0,H=1.0)

Answers

Answer:

The molar mass of gas Q is 43.923 g/mol

Explanation:

The given volume of ethane gas that diffuses through a porous plug in 100 seconds = 100 cm³

Therefore;

The rate of diffusion of ethane gas through the porous plug, [tex]v_{ethane}[/tex], is given as follows;

[tex]v_{ethane}[/tex] = (100 cm³/100 s) = 1 cm³/s

The molar mass of ethane, C₂H₆ = 2×12 g/mol + 6×1 g/mol = 30 g/mol

The given volume of gas, Q, that diffuses through a porous plug in 121 seconds = 100 cm³

∴ The rate of diffusion of the gas, Q, [tex]v_Q[/tex] = 100/121 cm³/s

Graham's Law of diffusion states that the rate of diffusion of a gas is inversely proportional to the square root of the molecular mass of the gas

Mathematically, we have;

[tex]\dfrac{v_A}{v_B} =\sqrt{\dfrac{m_B}{m_A} }[/tex]

Where;

[tex]v_A[/tex] = The rate of diffusion of gas A

[tex]v_B[/tex] = The rate of diffusion of gas B

[tex]m_A[/tex] = The molar mass of the gas A

[tex]m_B[/tex] = The molar mass of the gas B

Therefore, for ethane and gas Q, measured under the same condition, we have;

[tex]\dfrac{v_{ethane}}{v_Q} =\sqrt{\dfrac{m_Q}{m_{ethane}} }[/tex]

[tex]\dfrac{1 \ cm^3/s}{\dfrac{100}{121} \ cm^3/s} =\sqrt{\dfrac{m_Q}{30 \ g/mol} }[/tex]

[tex]m_Q = \left ({\dfrac{121}{100} } \right) ^2 \times 30 \ g/mol = 43.923 \ g/mol[/tex]

The molar mass of gas Q, [tex]m_Q[/tex] = 43.923 g/mol.

What is the order, plz answer

Answers

Answer:

C A B

Explanation:

come on, you also know this from normal water waves.

which ones are stronger (= have more energy) ? the small ones or the big ones ?

and the same applies to all waves. the bigger the waves (higher amplitude), the more energy.

Sodium is dissolved under kerosene oil or paroffin to protect it from the air. 3) State. Huckle's rule for aromaticity with example. How does benzene react with Chlorine in presense of Sun light​

Answers

Answer:

His rule states that if a cyclic, planar molecule has 4n+2 π electrons

Is there any Chemical including in BIOGESIC?
Can you tell me if it was included?​

Answers

Answer:

This combination product contains 2 medications, acetaminophen and an antihistamine. Acetaminophen helps to reduce fever and/or mild to moderate pain (such as headache, backache, aches/pains due to muscle strain, cold, or flu).

Explanation:

it will help you. may be

Answer:

looooser

mark me brailist

If the magnet loses its superconducting properties, all of the liquid helium could suddenly turn to a gas. If an MRI machine contains 1950 L liquid He with a density of 0.125g/mL, how many liters of He gas would be formed at 25°C and 1 atm? Use the ideal gas law. Round your final answer to two significant figures. Show your work. (4 points)

Answers

Answer:

Determine the volume of helium gas

Answer:

About 1,495 Liters of Helium.

Explanation:

To calculate the volume of helium gas formed when the magnet loses its superconducting properties, we can use the ideal gas law:

PV = nRT

Where:

P = Pressure (in atm)

V = Volume (in liters)

n = Number of moles of helium gas

R = Ideal gas constant (0.0821 L.atm/(mol.K))

T = Temperature (in Kelvin)

First, we need to find the number of moles of helium gas:

Given volume of liquid helium (V_liquid) = 1950 L

Density of liquid helium (ρ) = 0.125 g/mL = 0.125 g/cm³

To convert density from g/cm³ to g/L, we multiply by 1000:

Density of liquid helium (ρ) = 0.125 g/cm³ * 1000 cm³/L = 125 g/L

Mass of liquid helium (m) = Volume * Density = 1950 L * 125 g/L = 243,750 g

Next, we need to convert the mass of liquid helium to moles using the molar mass of helium:

Molar mass of helium (M) = 4.0026 g/mol

Number of moles (n) = Mass / Molar mass = 243,750 g / 4.0026 g/mol ≈ 60,907 mol

Now, we have the number of moles of helium gas (n), and we can calculate the volume of helium gas (V_gas) at 25°C (298.15 K) and 1 atm:

P = 1 atm

T = 25°C = 298.15 K

V_gas = nRT / P

V_gas = (60,907 mol) * (0.0821 L.atm/(mol.K)) * (298.15 K) / (1 atm)

V_gas ≈ 1,495 L

Therefore, approximately 1,495 liters of helium gas would be formed at 25°C and 1 atm when the magnet loses its superconducting properties.

Select all the correct answers.
Which two properties are characteristic of lonic compounds?

Answers

Answer:

1. Ionic compounds have high melting points.

Ionic compounds have high melting points.2 Ionic compounds are hard and brittle.

Ionic compounds have high melting points.2 Ionic compounds are hard and brittle.3 Ionic compounds dissociate into ions when dissolved in water.

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The company produced 20,000 units, and sold 15,000 units, leaving 5,000 units in inventory at year-end. What is the value of ending inventory under absorption costing Record the following selected transactions for January in a twocolumn journal. Once you have completed that, answer questions 1 5 related to your work. (a) Earned $7,000 fees; customer will pay later.(b) Purchased equipment for $45,000, paying $20,000 in cash and the remainder on credit(c) Paid $3,000 for rent for January.(d) Purchased $2,500 of supplies on account.(e) A. Allen $1,000 investment in the company.(f) Received $7,000 in cash for fees earned previously.(g) Paid $1,200 to creditors on account.(h) Paid wages of $6,250.(i) Received $7,150 from customers on account.(j) A. Allen withdrawal of $1,750.2. For part (h), which two accounts are affected?Question 2 options:Fees Earned and CashWages Expense and CashAccounts Payable and CashRent Expense and Cash permanent bodies that are established by the rules of each chamber and that continue from session to session. committees that handle issues that the most important committees in Congress do not consider. committees that work with counterparts in the other house of Congress. committees that reconcile differences in an action. committees inside committees, which handle tasks that the main committee has no time for. A manufacturer of computer memory chips produces chips in lots of 1000. If nothing has gone wrong in the manufacturing process, at most 7 chips each lot would be defective, but if something does go wrong, there could be far more defective chips. If something goes wrong with a given lot, they discard the entire lot. It would be prohibitively expensive to test every chip in every lot, so they want to make the decision of whether or not to discard a given lot on the basis of the number of defective chips in a simple random sample. They decide they can afford to test 100 chips from each lot. You are hired as their statistician.There is a tradeoff between the cost of eroneously discarding a good lot, and the cost of warranty claims if a bad lot is sold. The next few problems refer to this scenario.Problem 8. (Continues previous problem.) A type I error occurs if (Q12)Problem 9. (Continues previous problem.) A type II error occurs if (Q13)Problem 10. (Continues previous problem.) Under the null hypothesis, the number of defective chips in a simple random sample of size 100 has a (Q14) distribution, with parameters (Q15)Problem 11. (Continues previous problem.) To have a chance of at most 2% of discarding a lot given that the lot is good, the test should reject if the number of defectives in the sample of size 100 is greater than or equal to (Q16)Problem 12. (Continues previous problem.) In that case, the chance of rejecting the lot if it really has 50 defective chips is (Q17)Problem 13. (Continues previous problem.) In the long run, the fraction of lots with 7 defectives that will get discarded erroneously by this test is (Q18)Problem 14. (Continues previous problem.) The smallest number of defectives in the lot for which this test has at least a 98% chance of correctly detecting that the lot was bad is (Q19)(Continues previous problem.) Suppose that whether or not a lot is good is random, that the long-run fraction of lots that are good is 95%, and that whether each lot is good is independent of whether any other lot or lots are good. Assume that the sample drawn from a lot is independent of whether the lot is good or bad. To simplify the problem even more, assume that good lots contain exactly 7 defective chips, and that bad lots contain exactly 50 defective chips.Problem 15. (Continues previous problem.) The number of lots the manufacturer has to produce to get one good lot that is not rejected by the test has a (Q20) distribution, with parameters (Q21)Problem 16. (Continues previous problem.) The expected number of lots the manufacturer must make to get one good lot that is not rejected by the test is (Q22)Problem 17. (Continues previous problem.) With this test and this mix of good and bad lots, among the lots that pass the test, the long-run fraction of lots that are actually bad is (Q23) In Drosophila melanogaster the recessive alleles for brown and scarlet eyes (of two independent genes) produce a novel phenotype so that bw/bw;st/st is white. If a pure-breeding brown is crossed to a pure-breeding scarlet, what proportion of the F2 will be white please help asap, see attached photo. 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