Chemistry College

a) If we have a 4.5 L container of CH 10 gas at a temperature of 178 K and a pressure of 0.50 atm, then how many moles of CaHio do
we have?
b) How many grams of C4H1o do we have?

Answers

Answer 1

Answer:

a) 0.15 mol.

b) 8.95 g.

Explanation:

Hello there!

In this case, according to the given information, it is possible for us to infer this problem is solved by using the ideal gas equation:

[tex]PV=nRT[/tex]

And proceed as follows:

a) Here, we solve for the moles, n,  as follows:

[tex]n=\frac{PV}{RT} \\\\n=\frac{0.50atm*4.5L}{0.08206\frac{atm*L}{mol*K}*178K} \\\\n=0.15mol[/tex]

b) for the calculation of the mass, we recall the molar mass of butane, 58.12 g/mol, to obtain:

[tex]0.15mol*\frac{58.12g}{1mol} =8.95g[/tex]

Regards!

Related Questions

Calculate the amount of heat required to completely sublime 55.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kj mol

Answers

Answer:

40.4 kJ

Explanation:

Step 1: Given data

Mass of CO₂ (m): 55.0 gHeat of sublimation of CO₂ (ΔH°sub): 32.3 kJ/mol

Step 2: Calculate the moles corresponding to 55.0 g of CO₂

The molar mass of CO₂ is 44.01 g/mol.

n = 55.0 g × 1 mol/44.01 g = 1.25 mol

Step 3: Calculate the heat (Q) required to sublimate 1.25 moles of CO₂

We will use the following expression.

Q = n × ΔH°sub

Q = 1.25 mol × 32.3 kJ/mol = 40.4 kJ

20ml of water is mixed with 40gm of fine powder. Calculate the concentration of the solution obtained.

Answers

Answer:

[tex]\%m=66.7\%[/tex]

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the concentration of the solution obtained, by knowing 20 mL of water are the same to 20 g and therefore the mass of the solution is 40g+20g=60g.

Next, we apply the following equation to obtain the required concentration:

[tex]\%m=\frac{40g}{60g} *100\%\\\\\%m=66.7\%[/tex]

Regards!

The value of ΔH° for the reaction below is -6535 kJ. ________ kJ of heat are released in the combustion of 16.0 g of C6H6 (l)?

2C6H6 (l) + 15O2 (g) → 12CO2 (g) + 6H2O (l)

Answers

Answer:

the value of H° is below -6535 kj. +6H2O

Explanation:

6H2O answer solved

For the given reaction, 2 moles of C₆H₆ the heat energy released is - 6535 KJ. Then, for 16 g of the compound or 0.205 moles needs 669.83 KJ of heat released in combustion.

What is combustion ?

Combustion is a chemical reaction that occurs between a fuel and an oxidizing agent, typically oxygen, resulting in the release of heat, light, and various combustion products, such as carbon dioxide and water vapor.

The process of combustion involves a rapid and exothermic (heat-releasing) oxidation reaction that produces a flame, which is visible in many cases.

Here, 2 moles of the hydrocarbon releases - 6535 KJ of energy.

molar mass of C₆H₆ = 78 g/mol

then no.of moles in 16 g = 16 /78 = 0.205 moles.

then energy released by 0.205 moles  = 0.205 moles × 6535 KJ /2 moles = 669.83 kJ

Therefore, the heat energy released by 16 g of the compound in combustion is 669.83 kJ.

Find more on combustion :

https://brainly.com/question/13153771

#SPJ2

Other Questions
For a rollerblading party there are 50 tickets available. Jason buys 6 tickets and Heather buys three times as many as Jason bought. How many tickets are left to be sold?Show your work Read Josh's draft.Floating EntertainmentDuring the mid-19th century, before television or movies existed, people enjoyed forms of entertainment that are no longer common today.For example, people who lived in areas along the Mississippi River that were far from large cities depended on showboats. Showboats were boatson which plays were performedAn actor named William Chapman was the first person to build a showboat. He called his showboat the "Floating Theater." Actors lived onthe boat and traveled along the river. The showboat stopped at small towns to perform plays.Showboats were very popular but were discontinued when the Civil War began in 1861. They became popular again in the late 1870s.However, by the early 1900s, many settlements along the Mississippi had grown into larger towns with dance halls and movie theaters. As a result,Mississippi showboats began to lose their appeal. By 1910, people were heading to movie theaters big time.Josh wants to revise his last sentence.Is Josh's decision to revise his last sentence correct?O 1. No, because the information in the sentence provides a strong conclusion,O 2. No, because the information in the sentence is essential to the topic's main idea.O 3Yes, because the sentence includes a factual statement instead of a personal opinion.4. Yes, because the sentence contains slang and differs in style from the rest of the draft.Question #4Language 2-12 CA 2010 f(x) = 3x - 4x is -2 As Courtney switches on the TV set to watch her favorite cartoon, the electron beam in the TV tube is steered across the screen by the field between two charged plates. If the electron experiences a force of 3.0 * 10^6 N, how large is the field between the deflection plates? actor Co. can produce a unit of product for the following costs: Direct material $ 8.60 Direct labor 24.60 Overhead 43.00 Total product cost per unit $ 76.20 An outside supplier offers to provide Factor with all the units it needs at $48.40 per unit. If Factor buys from the supplier, the company will still incur 60% of its overhead. Factor should choose to: Do you have anything for dinner? Tienes _________ para la cena?They dont go anywhere today.Ellos no van a __________ lugar hoy.My parents never eat meat.Mis padres ____________ comen la carne.They dont buy anything at the mall.Ellos no compran _______ del centro commercial.I never go to the movies._______ voy al cine.I don't go with anyone to the cafe.No voy con _________ al caf.Are you going anywhere in the summer?Vas a _________ lugar durante el verano?Sara goes to school and I go too.Sara va a la escuela y yo voy _____________.Sara doesn't go to school and I don't go either.Sara no va a la escuela y yo no voy ____________. How did the reconstruction hurt and help the south? The agile shortstop fielded the ball. Which word is an adjective? agile ball shortstop fielded What part of the body of the essay shows the argument of the writer 7. Gatekna perangan geguritan iki!Ragamu lan ragakuPancen bedaUga ana ing rupaNanging jatining dhiriAwakku lan awakmu padhaYaiku sawijining manungsaKaandharna geguritan kasebut miturut cacahing gatra, cacahing wanda, lan gurulagune Where did democracy begin? what did not contribute to the fall of the Mughal Empire? what are the different steps while solving a problem using computer? explain Deep devotion to or extreme pride in ones nation The LCM of three numbers is 360 and the GCD of the same numbers is 2.If one of the numbers is 40.Find the other 2 numbers Select the transition word or phrase that best fills the blank.Required voting will make more Americans vote. ____ it will forcecandidates to appeal to a wider range of voters instead of justfocusing on the ones who are most likely to vote.A. That saidB. On the other hand,C. Furthermore,D. For example True or False? The statement below could be a counterclaim for the claim Students should not have homework. Having too much homework causes students stress, which negatively impacts their ability to perform well in school. Select one:TrueFalse Name any FIVE causes of stress in the workplace This circle graph shows the percent of land occupied by each continent.The area of North America is approximately 220 million km2.Use the percents in the circle graph.Find the approximate area of each of the other continents,to the nearest million square kilometres. Which XXX declares a student's name. public class Student { XXX private double myGPA; private int myID; public int getID() { return myID; } } Group of answer choices String myName; public String myName; private myName; private String myName;