What is the molar mass of K₂CO₃?

Answers

Answer 1

Answer:

138g/mol

Explanation:

K₂CO₃ is also known as potassium carbonate. It has a molar mass of around 138.21 g/mol (138.2055 g/mol to be exact).


Related Questions

Helium is a colourless, odorless used in bolloons. Calculate . the pressure Cin atm) exerted by 1.82 mous of gas in a steel vessel of volume 5.43 L at L 69.58°C​

Answers

Answer:

9.59 atm

Explanation:

Use ideal gas law    PV = n RT

 V = 5.34 L    n = 1.82 mole   T = ( 69.58+ 273.15) = 342.73 K

         R = .082057  L-Atm/(K - mole)

P  = n RT / V = 9.59 Atm

A square is used to represent the structure of which compound?
butane, 2,3-dimethyl butane, cyclobutane, cyclopentane

Answers

Answer:

cyclobutane

Explanation:

Balance the following chemical reaction equation:
FeS + _02_Fe2O3 + ___SO2

Answers

Explanation:

the answer is in the image above

Calculate the free energy change for the hydrolysis of ATP under these conditions.
The standard free energy change for the hydrolysis of ATP is -46.5 kJ.
ATP(aq)+H2O(l)→ADP(aq)+Pi(aq)
The concentrations of ATP, ADP, and Pi are 0.0089 M, 0.0019 M, and 0.0038 M. (Assume a temperature of 298 K.)

Answers

The free energy change for the hydrolysis of ATP by using the equation ATP(aq)+H2O(l)→ADP(aq)+Pi(aq) is -64362.77joules.

How do we calculate free energy change of reaction?

We can calculate the free energy change of reaction by using the standard free energy by using the below link:

ΔG = ΔG⁰ + RTlnQ, where

R = ideal gas constant = 8.314 J/mol.K

ΔG⁰ = standard free energy = -46.5 kJ = -46500 J

T = temperature = 298 K

Q = ratio of the products to reactants for the given chemical reaction

Q = [0.0019][0.0038] / [0.0089] = 8.1×10⁻⁴

On putting values on the above equation, we get

ΔG = -46500 + (8.314)(298)ln(8.1×10⁻⁴)

ΔG = -46500 + (2477.5)(-7.21)

ΔG = -46500 - 17862.77

ΔG = -64362.77

Hence required value of free energy change is -64362.77 joules.

To know more about free energy change, visit the below link:

https://brainly.com/question/15876696

#SPJ1

Which type of galaxy is shown

Answers

Answer:

Spriral

Explanation:

hope this helps

Basic properties are characteristic of all alkaline earth metal oxides except one. The formula of this exception is? BeO, MgO, SO2, B2O3, CaO

Answers

The formula of the exceptional case of alkaline earth metal oxides is SO2. Details about alkaline earth metals are found below.

What are alkaline earth metals?

Alkaline earth metals are elements of the group 2 in the periodic table. Alkaline earth metals are six in number and are as follows:

StrontiumBerylliumRadiumBariumMagnesiumCalcium

According to this question, Basic or alkaline properties are characteristic of all alkaline earth metal oxides. Sulphur IV oxide (SO2) is an oxide that has acidic properties.

Therefore, the formula of the exceptional case of alkaline earth metal oxides is SO2.

Learn more about alkaline earth metals at: https://brainly.com/question/12835232

Stronger acids are different than weaker acids because they are more likely to

Answers

Answer:

Strong acids completely ionize while weak acids partially ionize

What mass of aluminum (in g) would be required to completely react with 1.00 L of 0.450 M HBr in the following chemical reaction?
2 Al(s) + 6 HBr(aq) → 2 AlBr₃ (aq) + 3 H₂(g)

Answers

Answer:

4.0473g. Attached in image are the calculations I used to reach this answer.

Question in pic please see questions below !!!

Answers

Answer:

its the same thing as 3 x3 or 3+3 it always come´s back as 9 or 6 Because of life

Explanation:

A solution has a pOH of 2.40. Find out its pH

Answers

I believe the answer is 11.6

A solution has a pOH of 2.40. And it's pH is -11.6.

What is pH and how it calculated from pOH?It pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.In order to calculate the pOH, take the negative log of the hydroxide ion concentration. To find the pH, simply subtract pOH from 14.

A solution has a pOH of 2.40. And it's pH is -11.6.

To learn more about pH and how it calculated from pOH refer:https://brainly.com/question/22088974

#SPJ2

Check that Alpha Decay and Uranium are selected. Turn on Write Equation and Show Equation. What you see is an equation that shows the original uranium atom on the left. The boxes on the right represent the daughter product- the atom produced by radioactive decay- and the emitted alpha particle.

A. The upper left number next to the daughter product is the mass number of the daughter product. What is the mass number of the daughter product ?

B. The lower left number next to the daughter product is the atomic number of the daughter product. What is the atomic number of the daughter product ?

C. According to your equation, what isotope remains after the alpha decay of uranium-238?(Hint: look up the element symbol on the periodic table and name the element then dash and then mass number from A- ex: uranium-238)

D. How does the mass number of the daughter product after alpha decay relate to the original atom?

E. How does the atomic number of the daughter product after alpha decay relate to the original atom?

Answers

(A) The mass number of the daughter product is 234.

(B) The atomic number of daughter product is 90.

(C) The isotope that remains after the alpha decay is thorium-234.

(D) The mass number of the daughter product is 4 less than the original atom.

(E) The atomic number of the daughter product is 2 less than the original atom.

Alpha decay of Uranium

The alpha decay of Uranium involves the emission of alhpa particles and thorium-234 as daughter product.

[tex]^{238}_{92}U\ ---- > \ \ ^4_2He \ + \ ^{234}_{90}Th[/tex]

From the equation of alpha decay of Uranium, we can infer the following;

The mass number of the daughter product is 234.The atomic number of daughter product is 90.The isotope that remains after the alpha decay is thorium-234.The mass number of the daughter product is 4 less than the original atom.The atomic number of the daughter product is 2 less than the original atom.

Learn more about alpha decay here: https://brainly.com/question/17145324

#SPJ1

The molar solubility of CoS is 5.0 × 10-22 mol L–1 in pure water. Calculate the Ksp for CoS.

Answers

Answer:

2.5 X 10^-43

Explanation:

CoS> Co + S

Co=X

S=X

X= 5.0 X 10^-22

Ksp= [X][X]

Ksp= [5.0 X 10^-22][5.0 X 10^-22]

Ksp= 2.5 X 10^-43

The Ksp for CoS is calculated as 2.5 × 10⁻⁶³ (mol/L)². This value represents the equilibrium constant for the dissociation of CoS in water and indicates the extent of its solubility in the solution.

The molar solubility of CoS is given as 5.0 × 10⁻²² mol/L. In the chemical equation for the dissolution of CoS in water, it dissociates into Co⁻²⁺ and S²⁻ ions.

The solubility product constant (Ksp) expression for CoS is written as:

Ksp = [Co²⁺] * [S²⁻]

Since CoS dissolves completely to form one Co²⁺ ion and one S²⁻ ion, we substitute the molar solubility values into the Ksp expression:

Ksp = (5.0 × 10⁻²² mol/L) * (5.0 × 10⁻²² mol/L)

Ksp = 2.5 × 10⁻⁴³ (mol/L)²

Therefore, the Ksp for CoS is calculated as 2.5 × 10⁻⁶³ (mol/L)². CoS has an extremely low solubility in water, resulting in an exceptionally small Ksp value.

To learn more about molar solubility here

https://brainly.com/question/28170449

#SPJ2

How many moles of NO2 will be produced from 15 moles of oxygen?

2 NO (g) + O2 (g) -------------> 2 NO2 (g)

Answers

Based on the mole ratio of the reaction, 30 moles of NO2 will be produced from 15 moles of oxygen.

What is mole ratio of a reaction?

The mole ratio of a reaction is the ratio in which moles of reactants combine with themselves to form moles of products.

The equation of the reaction is given below:

[tex]2 NO (g) + O_2 (g) ---> 2 NO_2 (g)[/tex]

The mole ratio of NO2 to oxygen is 2 : 1

Molles of NO2 produced from 15 moles of O2 = 15 × 2 = 30 moles

Therefore, 30 moles of NO2 will be produced from 15 moles of oxygen.

Learn more about moles ratio at: https://brainly.com/question/19099163

Calculate and explain (in words) how you would make 90.0 mL of 2.0 M MgSO4 solution from a solid solute MgSO4.

Answers

Answer:

See Below.

Explanation:

Recall that molarity is defined by moles of solute over liters of solution (mol/L).

Therefore, to make 90.0 mL of 2.0 M MgSO₄, we will need:

[tex]\displaystyle 90.0\text{ mL} \cdot \frac{2.0\text{ mol MgSO$_4$}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} = 0.18\text{ mol MgSO$_4$}[/tex]

Convert this amount to grams. The molecular weight of MgSO₄ is 120.38 g/mol:

[tex]\displaystyle 0.18\text{ mol MgSO$_4$} \cdot \frac{120.38\text{ g MgSO$_4$}}{1\text{ mol MgSO$_4$}} = 22\text{ g MgSO$_4$}[/tex]

Therefore, to make the solution, we can add 22 grams of MgSO₄ into a graduated cylinder, then mix and dilute the solution with distilled water until we reach 90.0 mL.

Answer:

See below

Explanation:

MgSO4 mole wt = 24.3+32+16*4 = 120.3 gm

 for 90cc of 2M:

90/1000 * 2 * 120.3 = 21.66 gm

take 21.66 gm of the solid and dilute with water to 90 ml

What is the mass, in grams, of 5.90 mol C8H18?

Answers

[tex]\huge\mathbb{✒ANSWER}[/tex]

HI BRAINLY USER!!

JUST CLICK THE ATTACHMENT PHOTO

⊱─━━━━━━━━━⊱༻●

༺⊰━━━━━━━━━─⊰

》Mass = 5.90 x 114 = 672.6g.

This can be rounded to 673g

⊱─━━━━━━━━━⊱༻

●༺⊰━━━━━━━━━─⊰

#CARRY ON LEARNING

Use logarithmic properties to solve the following equation log3 5x+ log3 7= 4 leave your answer in fraction form please

Answers

Explanation:

Adding logs of same base is equivalent to multiplying the arguments. You get:

[tex] log_{3}(35x) = 4[/tex]

Use the definition of the log to turn this into an exponential function:

[tex] {3}^{4} = 35x[/tex]

[tex]81 = 35x[/tex]

[tex]x = \frac{81}{35} [/tex]

Which of these describes an ethical dilemma associated with prosthetics?
OA. The use of prosthetics to enable someone who has lost a bodily
function to regain that function
OB. The surgery required to maintain or replace prostheses
OC. The future use of prosthetics to enhance a body part's natural
function
D. Using a prosthetic arm that connects with nerve endings to receive
messages from the brain

Answers

Answer:

OC

Explanation:

Is the only answer which implies a dilemma.

An ethical dilemma associated with prosthetics among the following is The future use of prosthetics to enhance a body part's natural function. Hence, Option (C) is correct

What is Prosthetics ?

In medicine, a prosthesis, or a prosthetic implant, is an artificial device that replaces a missing body part, which may be lost through trauma, disease, or a condition present at birth.

Prostheses are intended to restore the normal functions of the missing body part.

Therefore, An ethical dilemma associated with prosthetics among the following is The future use of prosthetics to enhance a body part's natural function. Hence, Option (C) is correct

Learn more about Prosthetics here ;

https://brainly.com/question/14257476

#SPJ2

How much energy is released when 2.72 kg of diethyl ether (C4H10O) freezes? The heat of fusion of diethyl ether is 7.27 kJ/ mol

Answers

Answer:

2672 kj

Explanation:

C4H10 O mole wt =  48 + 10 + 16 =~ 74 gm

27200 gm / 74 gm/mole = 367.57 moles

367.57 moles * 7.27 kj/mole =

different between Anzeotropic mixture and Anzeotropic temperature​

Answers

Answer:

An azeotropic compound is a mixture of two substances which distil at the same temperature. An azeotrope is a mixture of compounds with the same composition in the vapour as in the liquid.

Explanation:

Hope it helps!

What temperature is necessary for 50 g of Potassium Chlorate to dissolve in
100 g of water?

Answers

Answer:

75°C

Explanation:

Answer: 75°C because KCL at 75°C goes into 50g in Solubility in 100g water. TRUST ME ITS RIGHT.

Which is a characteristic of an aqueous solution of HNO3?
A.
It conducts electricity.
B.
It forms OH-ions.
C.
It turns litmus blue.
D.
It turns phenolphthalein pink.

Answers

Answer:

A. it conducts electricity

Explanation:

A. Since Nitric Acid is a strong acid, which means it is a strong oxidizing agent, this makes Nitric Acid a good conductor of electricity.

B. Basic solutions are only going to form OH⁻ ions. A Nitric Acid solution will form H⁺ ions.

C. Alkaline substances (pH greater than 7) are more likely to turn blue, so HNO₃ would turn that blue into a red color.

D. I don't know much about phenolphthalein , all I know is that is is pink in Alkaline solutions (basic) and colorless in acidic solutions.  

I hope this helps, good luck!

How would describe the characteristics of the urine

Answers

Urine has the color of pale yellow to deep amber. It is odorless and has a pH of 4.5-8.0


How much energy is gained when a 10.0g sample of liquid water increases in temperature from 13°C to 18°C?

Answers

A 10.0 g-sample of liquid water absorbs 50 cal of energy when its temperature increases from 13 °C to 18 °C.

What is heat?

Heat is a form of energy resulting from the difference in temperature between two bodies.

A sample of water initially at 13 °C, absorbs energy in the form of heat and its temperature increases to 18 °C.

We can calculate the amount of heat absorbed using the following expression.

Q = c × m × ΔT

Q = 1.0 cal/g°C × 10.0 g × (18 °C - 13 °C) = 50 cal

where,

Q is the heat absorbed.c is the specific heat of water.m is the mass of water.ΔT is the change in the temperature.

A 10.0 g-sample of liquid water absorbs 50 cal of energy when its temperature increases from 13 °C to 18 °C.

Learn more about heat here: https://brainly.com/question/16559442

the question is attached.

Answers

Answer:

h20+co2= hco3

Explanation:

so that is not a single bond so it in gread 11 so I don't study it

What is the molar concentration (molarity, M) of a 450 mL solution that contains 2.00 mol of FeCl₂?​

Answers

Answer:

3.50 Mol/L or M

Explanation:

450 mL / 1000 = 0.45 L

1 mole ------- 126.751 g

? mole ------- 200 g

moles = 200 * 1 / 126.751

moles = 200 / 126.751

= 1.57789 moles FeCl₂

M = n / V

M = 1.57789 / 0.45

= 3.50 Mol/L or M

The compound M3X3 has a solubility of 0.039 g/L and a molar mass, ℳ = 108.64 g/mol. Calculate the Ksp for this compound.
Report your answer to TWO significant figures. You may (but are not required to) enter your answer in scientific notation; for example, if your answer is 2.4 × 10−2, you would enter 2.4E-2. The E must be uppercase.

Answers

Let's see

[tex]\\ \rm\Rrightarrow [M_3X_3]\leftrightharpoons {[M^{3+}]\atop 3x}+{[X^{3-}]\atop 3x}[/tex]

So

As solubility and molar mass given

[tex]\\ \rm\Rrightarrow [M_3X_3]=\dfrac{Solubility}{Molar\:mass}[/tex]

[tex]\\ \rm\Rrightarrow x=\dfrac{0.039}{108.64}[/tex]

[tex]\\ \rm\Rrightarrow x=0.00034M=3.4\times 10^{-4}M[/tex]

So

[tex]\\ \rm\Rrightarrow K_{sp}=(3x)(3x)=(3x)^2=9x²[/tex]

So

[tex]\\ \rm\Rrightarrow K_{sp}=9(3.4\times 10^{-4})^2=0.0000010404=104\times 10^{-6}mol^2L^{-2}=104\mu mol^2L^{-2}[/tex]

Highly permeable soil that is capable of storing water is called a(n)___________.
A. aquifer
B. water table
C. irrigated system
D. groundwater reserve

Answers

Answer:

The answer is A. Aquifer

Explanation:

It stores groundwater.

In the "heavy
water" that is used in nuclear reactors,
the hydrogen in water is replaced with
deuterium. Deuterium is a hydrogen
atom with a neutron. It has a molar
mass twice that of hydrogen. Sketch
the percent composition pie chart for
heavy water.

Answers

Heavy water contains 20% hydrogen by mass and 80% oxygen by mass.

What is the molar mass of heavy water?

Heavy water is water which contains the heavy isotope of hydrogen, Hydrogen-2 in its molecules.

The mass of heavy water is greater than that of water.

The molar mass of heavy water is 20.0 g

The percentage composition of the elements in heavy water are as follows:

Hydrogen = 2 × 2g/20 g ×100% = 20%

Oxygen = 16g/20g × 100% = 80%.

Therefore, Heavy water contains 20% hydrogen by mass and 80% oxygen by mass.

Learn more about heavy water at: https://brainly.com/question/2142633

#SPJ1


If liquid nitrogen is poured over a balloon, what will happen to the volume of the balloon? Use
the kinetic-molecular theory to explain

Answers

Answer:

The balloon will instanly freeze and "shatter" :)

Explanation:

The volume of a gas will shrink if its temperature decreases. The cold liquid nitrogen cools the air inside the balloon. As a result the molecules of air slow down causing the volume of the balloon to decrease. :)

Have an amazing day!!

Please rate and mark brainliest!!


1 When cooled by liquid nitrogen, the balloon shrinks (not as much as the air-filled balloon) and it sinks down on the table.

reason the volume of a gas will shrink if its temperature decreases

How are fusion and fission similar? Click the two answers that apply.

a
Both produce large amounts of energy.
b
Both occur in the stars.
c
Both are used to create electricity.
d
Both involve changes in the nucleus of atoms.
e
Both create radioactive waste.

Answers

Both product large amounts of energy
Other Questions
The work of a student to solve the equation 3(3x 4) = 8 + 2x + 5 is shown below: Step 1. 3(3x 4) = 8 + 2x + 5 Step 2. 6x 7 = 13 + 2x Step 3. 6x 2x = 13 + 7 Step 4. 4x = 20 Step 5. x = 5 In which step did the student first make an error and what is the correct step? (1 point) Step 2, 9x 12 = 13 + 2x Step 2, 9x 4 = 2(6 + x + 3) Step 3, 6x + 2x = 13 + 7 Step 3, 6x 2x = 13 7 The area of a computer screen is 108 in with a side length of 12. What is the area of a tv screen similar to the computer screen with a side length of 20 in? Efficiently solve A. 30x70+37x70B. 335x11-135x11C. 223x87-123x87D. 3.2x120+16.8x120E. 555x0.08-545x0.08F. 3.45x17-1.45x17G. 0.7x0.7x85Thanks so Much if you Help me! _______________ is an eating disorder in which a person alternates binge eating with purging, or fasting.Anorexia nervosaBulimia nervosaBinge-eating disorderBody-dysmorphic disorder In your opinion, what is the best metal band from the 90's? what is the product of mixed number 2 x 2 7/8? Factor the binomial.4z2 25 4z2 25 = Complete each sentence with the correct demonstrative pronoun.1. __ qui polluent la nature doivent payer2. De toutes les plantes, ___ qui sont menaces doivent tre notre pri.3. Ce fleuve est __ que je prfre 4. Ces sentiers sont sal ___ que nous avons pris taient plus propres.5. Les falaises sont souvent dangeruses. __- que vous connaissez prs d'ici le sont moins.6. Regarde ces vaches! __ qui est venue manger dans ma main est trs gentille. Which of the following is a reason for us intervention in latin american countries? question 18 options: to aid in the spread of social welfare programs to ensure the success of command economies to protect us based companies from being nationalized to help rewrite their constitutions 5 post testFREE ANSWER!!!!Select the correct answer.What concept do both excerpts refer to?A. All citizens should have the right to hold public office.B. Governments get their power by permission of the governed.C. Women have suffered under male tyranny throughout history.D. Men can take from women the wages that women earn.The answer is B An "Olympiad" consists of what lengthof time? I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER What is the probability for blue or yellow (be sure to simplify)? What is the total energy required to break all the bonds in 1 mol hexane, c6h14 Which expression is equivalent to 10x2y 25x2? 5x2(2y 5) 5x2y(5 20y) 10xy(x 15y) 10x2(y 25) How many babies can you have A linkage between two atoms formed by the sharing of electrons, or attraction is called a. Using the table, if there are 5 flowers, how many petals are there?A) 11B) 6C) 30D) 25 Kiran is going to see a movie and is taking his 3 kids. Each movie ticket costs $13 and there are an assortment of snacks available to purchase for $4. 50 each. How much total money would Kiran have to pay for his family if he were to buy 4 snacks for everybody to share? How much would Kiran have to pay if he bought xx snacks for everybody to share?I will give brainlist plsssss I need helppp Moses is creating a large cube sculpture for a city park. He first makes a smaller cube to use as a rough model of his sculpture. The edge lengths of the model are each 25 in. The edge lengths of the sculpture will be 3 times the model's edge lengths. How many times as large is the volume of the sculpture than the volume of the model? Show your work.