1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
loris [4]
3 years ago
10

2) If I have an unknown quantity (# of moles) of gas at a pressure of 32 atm, a volume of 70 L, and a temperature of 25˚C. How m

any moles of gas are in the sample?
Chemistry
1 answer:
astra-53 [7]3 years ago
3 0

Answer:

91.5 mol

Explanation:

Volume of gas = 70 L

Temperature = 25°C

Pressure = 32 atm

Moles of gas  = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

25+273.15 = 298.15 K

By putting values,

32 atm × 70 L = n ×0.0821 atm.L /mol.K × 298.15 K

2240 atm.L = n ×24.48 atm.L /mol

n = 2240 atm.L / 24.48  atm.L /mol  

n = 91.5 mol

You might be interested in
Explain Gay-Lussac’s Law in terms of the kinetic-molecular theory.
viktelen [127]

Answer:

Gay-Lussac's law states that in a closed system of fixed volume, as the temp and the pressure of the gas increases.

Explanation:

Temperature is a measure of the average kinetic energy of a substance. As the temp of a substance rises, its molecules are moving faster

7 0
3 years ago
Clearly distinguish between science and technology​
tia_tia [17]

Answer:

The words science and technology can and often are used interchangeably. But the goal of science is the pursuit of knowledge for its own sake while the goal of technology is to create products that solve problems and improve human life. Simply put, technology is the practical application of science.

Explanation:

Check the following images

Hope it helps!!!

Please mark it as Brainliest ( the crown icon)

3 0
3 years ago
James was standing on a boat in deep ocean water. He wanted to see how long it would take a tennis ball to reach the shore if he
Black_prince [1.1K]

Answer:

only the wave energy of the water moves

Explanation:

The plan will not work due to the fact that only the wave energy of the water moves and not the water itself.

<em>The wave motion of water does not displace the water. It is only able to transfer energy from one point to another within the medium. Hence, the ball will hardly be displaced because the water itself does not move. However, it can get to the shore with the assistance of the water current.</em>

7 0
3 years ago
Predict the two most likely mechanisms for the reaction of 1-iodohexane with potassium tert-butoxide.
Rudiy27

Answer:

C) SN2 and E2

Explanation:

For this question, we have analyzed the <u>substrate</u> and the <u>base/nucleophile</u>. The substrate, in this case, is 1-iodohexane and the base/nucleophile is potassium tert-butoxide.

<u>Substrate</u>

<u />

In the 1-iodohexane the iodide "I" is bonded to a primary carbon (carbon 1). Therefore we will have a <u>primary substrate</u>. If we have a primary substrate an Sn1 can not take place. We can not have a <u>primary carbocation</u> due to this instability. So, we can disccard options A) and B).

<u>Base/nucleophile</u>

<u />

In the potassium tert-butoxide we have an ionic compound. A positive charge is placed in the potassium atom a negative charge is placed in the oxygen of the ter-butoxide ion. So, we will have a <u>strong base</u> (a molecule with the ability to remove electrons) and a <u>strong nucleophile</u> (a molecule with ability to bond with an electrophile). With all this in mind, w<u>e can not have an E1 reaction</u>.

With both analyses, the answer is C).

See figure 1

I hope it helps!

6 0
3 years ago
Is holding an ice cube on your hand a chemical change?
Strike441 [17]
Yes. its a chemichal change.
7 0
3 years ago
Other questions:
  • When sweat evaporates from your skin, the salts left behind on your skin represent a:
    12·2 answers
  • Which season will the northern hemisphere experience if the axis of Earth is tilted away from the sun?
    13·2 answers
  • Write balanced equations for the following reactions
    9·1 answer
  • About how much is one liter?
    11·1 answer
  • Calculate the mass in 4.05*10^22 molecules of calcium phosphate
    9·1 answer
  • Why does no reaction occur when mixing magnesium nitrate and lithium bromide?
    7·1 answer
  • Synthesis of cholesterol takes place in the
    10·1 answer
  • WHY DO COLORS START TO DIM UNDERWATER PLEASE HELP WILL BRAINLIST
    11·1 answer
  • Iron-60 Express your answer as an isotope.
    12·1 answer
  • Question 5
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!