How do I solve this? Please help.
How much heat is required to raise the temperature of 179g of acetic acid, CH3COOH, from 250C to 82.70C?

Answers

Answer 1

Answer: The heat required to raise the temperature of 179 g of acetic acid, is 21000 Joules

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

[tex]Q=m\times c\times \Delta T[/tex]

Q = Heat absorbed  = ?

m = mass of acetic acid = 179 g

c = heat capacity of acetic acid = [tex]2.043J/g^0C[/tex]

Initial temperature  = [tex]T_i[/tex] = [tex]25^0C[/tex]

Final temperature = [tex]T_f[/tex]  = [tex]82.7^0C[/tex]

Change in temperature ,[tex]\Delta T=T_f-T_i=(82.7-25)^0C=57.7^0C[/tex]

Putting in the values, we get:

[tex]Q=179g\times 2.043J/g^0C\times 57.7^0C=21100J[/tex]

Thus heat required to raise the temperature of 179 g of acetic acid, is 21000 Joules


Related Questions

If  O2(g) reacts with H2(g) to produce  H2O, what is the volume of H2O obtained from 1 L of O2?

Hint:  Write a balanced equation first!

Answers

Answer:

2L

Explanation:

We'll begin by writing the balanced equation for the reaction this is illustrated below:

2H2 + O2 —> 2H2O

1 mole of a gas occupy 22.4L.

1 mole of O2 occupy 22.4L.

2 moles of H2O occupy = 2 x 22.4 = 44.8L.

From the balanced equation above,

22.4L of O2 produced 44.8L of H2O.

Therefore, 1L of O2 will produce = 44.8/22.4 = 2L.

Therefore, 1L of O2 will produce 2L of H2O.

According to one acid-base theory a molecule acts as an acid when the molecule

Answers

Donates an H+ ion {Arrhenius theory}

8. Which of the following energy sources is relatively expensive to set up. but has a low cost once it is in place?

A. natural gas

B. coal

C. nuclear power

D. solar power​

Answers

I’m pretty sure D is the answer. Hope this helps!

ionic compounds conduct electricity in the solid state true or false​

Answers

Answer: False

In solid form, ionic compounds do not conduct electricity. Ionic compounds will conduct electricity when melted to their liquid state. This is due to the electrons being locked in place when in solid form, but liquid form allows for the electrons to move freely.

On May 3, Zirbal Corporation purchased 4,500 shares of its own stock for $36,000 cash. On November 4, Zirbal reissued 800 shares of this treasury stock for $7,200. Prepare the May 3 and November 4 journal entries to record Zirbal's purchase and reissuance of treasury stock.

Answers

Answer:

Explanation:

Each share costs $36000/4500

= $8

800 shares will cost 800*8

= $6400

Find attached the journal

Base your answer on the pedigree chart below and on your knowledge of biology. The pedigree chart represents the inheritance of color blindness through three generations. Mary and Steve are expecting another child. What is the probability that the new baby will be colorblind

Answers

Answer:

1/2 or 50%

Explanation:

The probability would be 1/2 or 50%.

Color blindness is generally an X-linked recessive traits. Since males only have one X chromosome, they are either affected or not affected but females with two X chromosomes can be a carrier in addition to being affected or unaffected.

Also, males usually get their X chromosomes from their mothers while the two X chromosomes in females are contributed by each parents.

Let the allele for colour blindness be b.

Genotype of Steve would be [tex]X^bY[/tex]

Since, they produced a male child with color blindness, Mary is a carrier with the genotype: [tex]X^BX^b[/tex]

[tex]X^bY[/tex]   x   [tex]X^BX^b[/tex]

progeny: X^BX^b (carrier female), X^bX^b (affected female), X^BY (unaffected male), and X^bY (affected male)

Probability of producing color blind children = 2/4 = 1/2

Hence, the probability of their new born baby being color blind remains 1/2 or 50%

PLEASE ANSWER ASAP- 2 MIN LEFT
A pH of 7 indicates that a solution is ___________ ; a ph <7 would mean the solution is ____________________; and a pH >7 is a(n) ---------- solution.

Answers

Answer:

neutral, acidic, basic

Explanation:

Know the acidity rules. Sorry I just saw this!

- Hope that helps! Please let me know if you need further explanation.

1. An airplane flew from San Francisco to Washington, D.C.
Approximately halfway through the flight, the plane had traveled 2,000
km in 2.5 hours. What was the speed during this period?

Answers

200 miles per hour is ur answer

if 31.6 g of KMnO4 is dissolved in enough water to give 160 mL of solution, what is the molarity?
AND
what mass of oxalic acid , H2C204, is required to make 300 mL of a .74 M solution?

Answers

Answer:

A. 1.25M

B. 19.98g

Explanation:

A. Data obtained from the question include the following:

Mass of KMnO4 = 31.6 g

Volume = 160 mL

Molarity =..?

We'll begin by calculating the number of mole KMnO4 in the solution. This is can be obtained as follow:

Mass of KMnO4 = 31.6 g

Molar mass of KMnO4 = 39 + 55 + (16x4) = 158g/mol

Number of mole of KMnO4 =..?

Mole = mass /Molar mass

Number of mole of KMnO4 = 31.6/158 = 0.2 mole

Now, we can obtain the molarity of the solution as follow:

Volume = 160 mL = 160/1000 = 0.16L

Mole of KMnO4 = 0.2 mole

Molarity = mole /Volume

Molarity = 0.2/0.16 = 1.25M

B. Data obtained from the question include the following:

Volume = 300mL

Molarity = 0.74 M

Mass of H2C2O4 =..?

First, we shall determine the number of mole H2C2O4. This is illustrated below:

Volume = 300mL = 300/1000 = 0.3L

Molarity = 0.74 M

Mole of H2C2O4 =?

Mole = Molarity x Volume

Mole of H2C2O4 = 0.74 x 0.3

Mole of H2C2O4 = 0.222 mole

Now, we can easily find the mass of H2C2O4 by converting 0.222 mole to grams as shown below:

Number of mole of H2C2O4 = 0.222 mole

Molar mass of H2C2O4 = (2x1) + (12x2) + (16x4) = 2 + 24 + 64 = 90g/mol

Mass of H2C2O4 =..?

Mass = mole x molar mass

Mass of H2C2O4 = 0.222 x 90

Mass of H2C2O4 = 19.98g

I am at the centre of the atom and contain both neutrons and protons. What am I?
and
Complete the sentence:
Atoms have no overall
charge because...

Answers



An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.

Answer:

Nucleus and atoms have no overall charge because each element has the same number of protons and electrons which cancel out each other.

water is a highly polar molecule with strong hydrogen bonding. one of the results of this is that water can climb up a narrow tube. the phenomenom is known as:
A. catapult action (aka trebuchet onfire)
B. capillary action
C. carpel tunnel syndrom
D. capitalization

Answers

Answer:

Option B, Capillary action

Explanation:

Water molecules attach with the molecules of the surface of the container in which they are kept. This is because of the cohesive force within the molecules of water and adhesive force between the molecules of water and other substances.

The water rises up in a capillary tube because of water molecules adhere at the edges thereby creating a meniscus in the upside turned direction. The surface is kept intact by the surface tension

Now capillary action specifically occurs when adhesion to the surface of the container is higher than the cohesion between the water molecules.  

Hence, option B is correct

(Multiple Choice, 30 pts)

A student thinks that halogens are highly reactive because their electrons are weakly attracted to their nuclei. Which is evidence that disputes this student's idea?

A. Halogens react with alkali metals.
B. Halogens cannot react with noble gases.
C. Halogens tend to attract electrons when bonding.
D. Halogens have a full octet of electrons.

Answers

Answer:

c

Explanation:

¨Halogens being non metals have greater electronegativities hence, attract electrons and making the statement disputed. Nobel gases are highly stable; this explains why they are nonreactive. They do not form chemical bonds because they only have a little tendency to either gain or lose an electron; on the other hand, halogens are reactive because they only need one additional electron to complete their octet. ¨

i found that from another users answer for the same question

Answer:

answer c

Explanation:

A sample of diborane gas has a pressure of 345 torr at a temperature of -15c and volume of 3.48L if conditions are changed so that the temperature is 36c and the pressure is 468 torr what will be the volume of the sample

Answers

Answer: 3.05L= V2

Explanation:

using

P1V1/T1=P2V2/T2

where p1= 345torr

T1, tempertaure= -15c+ 273=258K

T2, temperature= 36+ 273=309K

p2, Pressure= 468 torr

V2=???

P1V1/T1=P2V2/T2

v2=P1V1T2/T1P2= 345X3.46L X 309/ 258X 468=

V2=  3.05L

help me name the molecule

Answers

Answer:

ether

Explanation:

ether is -OR

- Hope that helps! Please let me know if you need further explanation.

PLEASE HURRY

Which substance loses electrons in a chemical reaction?

A.the one that is oxidized, which is the oxidizing agent
B.the one that is reduced, which is the reducing agent
C.the one that is oxidized, which is the reducing agent
D.the one that is reduced, which is the oxidizing agent

Answers

Answer:

4) the one that is reduced, which is the oxidizing agent

Explanation:

An oxidizing agent is one that causes oxidation by gaining electrons from another atom/molecule.

Answer:

c

Explanation:

Na2O+H2O= 2NaOH how many grams of Na2O are required to produce 1.06*10^2 grams of NaOH

Answers

Answer:

77.5 grams of Na2O

Explanation:

Convert grams to mols.

1.06 x 10^2 grams x 1 mol NaOH/39.99

= 2.50 mols NaOH

Find the mole ratio of NaOH and Na2O

1:2

Convert mols NaOH to Na2O mols

2.50 mols NaOH x 1 mol Na2O/2 mols NaOH

= 1.25 mols Na2O

Convert to grams

1.25 mols Na2O x 61.98 grams Na2O/1 mol

= 77.5 grams Na2O required to produce 1.06 x 10^2 grams of NaOH

In an experiment, 10.6 grams of steam is produced and then cooled. If the heat of vaporization is 2,257 joules/gram, how much energy is released after all the vapor turns to liquid?

Answers

Answer:

23,900 joules

Explanation:

plato answer

Answer:

23,900 joules

Explanation:

Edmentum

* I’ll give you brainlist* The skeletal system has many functions. Which of the following body functions does the skeletal system NOT do?

Answers

Answer:

A) remove germs from the blood

Explanation:

cause the rest are the skeletal system function

Answer:

The skeletal system does not remove germs from the blood

Explanation:

I learned that from my teacher

How much K2Cr2O7 is needed to create a saturated solution in 400 grams of water at 50oC?

Answers

Answer:

The mass of K₂Cr₂O₇ needed to create a saturated solution in 400 grams of water at 50°C is 120 grams

Explanation:

To answer the question, we will be required to know the solubility of potassium dichromate, K₂Cr₂O₇ in H₂O at 50°C

From the solubility curve, we have, 30 g of K₂Cr₂O₇ will be required to create a saturated solution in 100 g of at 50°C. Therefore, the amount of K₂Cr₂O₇ that will be required to create a saturated solution in 400 g of water, is given by the following equation;

[tex]400 \times \frac{30 \, g \ K_2Cr_2O_7}{100g \ H_2O} = 120 \, g[/tex]

Therefore, the mass of K₂Cr₂O₇ needed to create a saturated solution in 400 grams of water at 50°C = 120 grams.

Answer:

Approximately 128 g of K₂Cr₂O₇ will saturate 400 g of water.

Explanation:

From Literature and solubility curves, the solubility of K₂Cr₂O₇ at 50°C was obtained to be approximately 32 g/100 mL.

Solubility of K₂Cr₂O₇ in water at 50°C = 32 g/100 mL of water

So, how much K₂Cr₂O₇ will dissolve in 400 g of water?

Density of water = 1 g/mL

So, 1 g of water = 1 mL of water

400 g of water = 400 mL of water.

So, if 100 mL of water dissolves 32 g of K₂Cr₂O₇

400 mL of water will dissolve (32 × 4) g of K₂Cr₂O₇, that is, 128 g of K₂Cr₂O₇.

Hope this Helps!!!!

A gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume is doubled?

Answers

Answer:

.43 atm

Explanation:

11.2 x .860 = ans./22.4

We can check this by knowing that P and V at constant T have an inverse relationship. Therefore, this answer is correct.

- Hope that helps! Please let me know if you need further explanation.

The molecule BF3 is an example of a resonance structure.
TRUE O FALSE

Answers

Answer:

False, it's not an example of a resonance structure.

The diameter of a circular swimming pool is 12 feet. Find circumference Round to the nearest tenth . Use 3.14 for pi

Answers

Answer:

the pool's circumference is 37.7 ft^2 (rounded to nearest tenth).

CHEM HELP PLS 30 POINTS!!

1. what volume of 0.20 M HCl (aq) is needed to titrate 50 mL of 0.10 M NaOH to the endpoint?
A) 10.0 mL HCl
B) 40.0 mL HCl
C) 25.0 mL HCl
D) 20.0 mL HCl

2. what is the molarity of a NaOH solution if 40 mL of the solution is titrated to the endpoint with 15 mL of 1.50 M H2SO4?
A) 1.13 M
B) 1.47 M
C) 0.56 M
D) 0.75 M

3. suppose that 10.0 mL of HNO3 is neutralized by 71.4 mL of a 4.2 x 10 ^ -3 M solution of KOH in a titration. Calculate the concentration of the HNO3 solution.
A) 1.0 x 10 ^ -2 M
B) 3.0 x 10 ^ -2 M
C) 5.5 x 10 ^ -2 M
D) 1.0 x 10 ^ -14 M

Answers

1. 25 ml
2. 0.56 M
3. 3.0x 10^-2 M
Step by step explanation as follow
Use the formula (Molarity x volume) = ( molarity x volume)
The volume of HCl needed is 25 mL The molarity of NaOH needed is 1.13 MThe concentration of HNO₃ is 3×10¯² M

1. How to determine the volume of HCl needed

Balanced equation

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1The mole ratio of the base, NaOH (nB) = 1

From the question given above, the following data were obtained:

Volume of base, NaOH (Vb) = 50 mLConcentration of base, NaOH (Cb) = 0.1 MConcentration of acid, HCl (Ca) = 0.2Volume of acid, HCl (Va) =?

CaVa / CbVb = nA / nB

(0.2 × Va) / (0.1 × 50) = 1

(0.2 × Va / 5  = 1

Cross multiply

0.2 × Va  = 5

Divide both side by 0.2

Va = 5 / 0.2

Va = 25 mL (Option C)

2. How to determine the molarity of NaOH

Balanced equation

H₂SO₄+ 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation above,

The mole ratio of the acid, H₂SO₄ (nA) = 1The mole ratio of the base, NaOH (nB) = 2

From the question given above, the following data were obtained:

Volume of base, NaOH (Vb) = 40 mLConcentration of acid, H₂SO₄ (Ca) = 1.5 MVolume of acid, H₂SO₄ (Va) = 15 mL Concentration of base, NaOH (Cb) =?

CaVa / CbVb = nA / nB

(1.5 × 15) / (Cb × 40) = 1 / 2

22.5 / (Cb × 40) = 1 / 2

Cross multiply

Cb × 40 =  22.5 × 2

Divide both side by 40

Cb = (22.5 × 2) / 40

Cb = 1.13 M (Option A)

3. How to determine the molarity of HNO₃

Balanced equation

HNO₃ + KOH —> KNO₃ + H₂O

From the balanced equation above,

The mole ratio of the acid, HNO₃ (nA) = 1The mole ratio of the base, KOH (nB) = 1

From the question given above, the following data were obtained:

Volume of base, KOH (Vb) = 71.4 mLConcentration of base, KOH (Cb) = 4.2×10¯³ MVolume of acid, HNO₃ (Va) = 10 mL Concentration of acid, HNO₃ (Ca) =?

CaVa / CbVb = nA / nB

(Ca × 10) / (4.2×10¯³ × 71.4) = 1

(Ca × 10) / 0.29988 = 1

Cross multiply

Ca × 10 = 0.29988

Divide both side by 10

Ca = 0.29988 / 10

Ca = 3×10¯² M (Option B)

Learn more about titration:

https://brainly.com/question/14356286

which substance increases in solubility as the temperature decreases

Answers

Answer:

Gas

hope this helped

Na2CO3 is a/an ____________ compound where its electrons are _______. *
1.covalent, shared
2.covalent, gained/lost
3.ionic, gained/lost
4.ionic, shared

Answers

Answer:

Answer is 3 because NaCo3 because NaCo3 is ionic compound and electrons of ionic compound are gained / lost

What are the four main parts of the Sun? *

Answers

Answer: The inner layers are core, radiative zone, and convective zone. The putter layers a photosphere, the chromosphere, the transition region and the corona

Which characteristic most likely describes the water in Lake Taal?
Select the correct answer.
o The water will appear slightly red.
O The water will have a slippery feel.
The water will taste bitter.
The water will taste sour.​

Answers

Answer: The water will taste sour.

Explanation:

Answer: D. The water will taste sour (Edmentum)

Explanation:

Identify earths lithospheric plates

Answers

Answer:

Lithospheric plates are regions of Earth's crust and upper mantle that are fractured into plates that move across a deeper plasticine mantle. Earth's crust is fractured into 13 major and approximately 20 total lithospheric plates.

Explanation:

I hope this helps

Why might you have difficulty determining the pH of bleach using ph strips?

Answers

Answer:

pH test strips will lose colour and their pH sensitivity as strips are made from universal indicator. Universal indicator is composed of phenolphthalein, methyl red, methyl orange and thymol blue.

Explanation:

pH test strips are made from the universal indicator. The universal indicator is composed of phenolphthalein, methyl red, methyl orange, and thymol blue. All of these will react with chlorine in bleach. As a result, they will lose color and pH sensitivity. Due to this, it is difficult to determine the pH of bleach using ph strips.

La aspirina se prepara haciendo reaccionar ácido salicílico con exceso de anhídrido etanoico. En un experimento, 50.05 g de ácido salicílico se convirtieron en 55.45 g de aspirina. ¿Cuál fue el porcentaje de rendimiento?

Answers

La aspirina se prepara haciendo reaccionar ácido salicílico con exceso de anhídrido etanoico. En un experimento, 50.05 g de ácido salicílico se convirtieron en 55.45 g de aspirina. ¿Cuál fue el porcentaje de rendimiento?

In English:

Aspirin is prepared by reacting salicylic acid with excess ethanoic anhydride. In one experiment, 50.05 g of salicylic acid was converted to 55.45 g of aspirin. What was the yield percentage?

Answer:

el rendimiento porcentual para la cantidad dada de ácido salicílico es 84.99 %

In English:

the percent yield for the given amount of salicylic acid is 84.99%

Explanation:

La ecuación química equilibrada para la reacción se puede escribir como:

C₇H₆O₃ + C₄H₆O₃    →    C₉H₈O₄ + HC₂H₃O₂

Para la reacción mostrada arriba; El reactivo limitante de la reacción es el ácido salicílico. Ahora; calcular el porcentaje de rendimiento; se espera que primero determinemos el rendimiento teórico de la reacción.

Entonces; la fórmula para calcular el porcentaje de rendimiento: [tex]\mathbf {= \frac{actual \ yield }{theoretical \ yield } *100 }[/tex]  

El rendimiento teórico se determina de la siguiente manera:

50.05 g * 1 mol / 138.21 g / mol de C₇H₆O₃ * 1 mol de C₉H₈O₄ / 1 mol de C₇H₆O₃ * 180.157 g / mol de C₉H₈O₄ = 65.24 g de C₉H₈O₄

Porcentaje de rendimiento [tex]\mathbf {= \frac{55.45 }{65.24 } *100 }[/tex]

Porcentaje de rendimiento = 84.99%

Por lo tanto, el porcentaje de rendimiento para la cantidad dada de ácido salicílico es 84.99%

In English:

The balanced chemical eqaution for the reaction can be written as:

C₇H₆O₃ + C₄H₆O₃    →    C₉H₈O₄ + HC₂H₃O₂

For the reaction shown above;  The limiting reactant from the reaction is  salicylic acid. Now; to calculate the percentage yield ; we are expected to first determine the theoretical yield of the reaction.

So; the formula for calculating the percentage yield [tex]\mathbf {= \frac{actual \ yield }{theoretical \ yield } *100 }[/tex]  

The theoretical yield is determined as follows:

50.05 g * 1 mol/ 138.21 g/mol of C₇H₆O₃ * 1 mol of C₉H₈O₄/ 1 mol of C₇H₆O₃ * 180.157 g/mol of C₉H₈O₄ = 65.24 g of C₉H₈O₄ is produced

Percentage yield [tex]\mathbf {= \frac{55.45 }{65.24 } *100 }[/tex]

Percentage yield = 84.99%

Thus, the percent yield for the given amount of salicylic acid is 84.99%

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