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
inessss [21]
3 years ago
13

How many moles are in a balloon that is 50.2L, 755 mmHg and -22.0C?

Chemistry
1 answer:
Inessa05 [86]3 years ago
8 0

Answer:

n ≈ 2.42 moles

General Formulas and Concepts:

<u>Chem</u>

Ideal Gas Law: PV = nRT

  • P is pressure in mmHg
  • V is volume in liters
  • n is number of moles
  • R is a constant (62.4 L · mmHg/mol · k)
  • T is temperature in Kelvins

K = °C + 273

Explanation:

<u>Step 1: Define</u>

V = 50.2 L

P = 755 mmHg

T = -22.0°C = 251 K

<u>Step 2: Find moles </u><em><u>n</u></em>

(755 mmHg)(50.2 L) = n(62.4 L · mmHg/mol · k)(251 K)

37901 mmHg · L = n(15662.4 L · mmHg/mol)

n = 2.41987 moles

<u>Step 3: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

2.41987 moles ≈ 2.42 moles

You might be interested in
This diagram shows the forces acting on a car. The center dot represents the car, and the arrows represent the forces acting on
Mariulka [41]

Answer : The correct option is B- Towards the left.

Solution : Given,

Force on car in upward direction, F_1 = 6000 N

Force on car in downward direction, F_2 = 6000 N

Force on car in right direction, F_3 = 5000 N

Force on car in left direction, F_4 = 6000 N

Force : Force is equal to the mass multiplied by the acceleration. The force is directly proportional to the acceleration.

Formula :  F =  m × a

where, F is force, m is mass and a is acceleration.

From the given diagram we conclude that the F_1 and F_2 are in opposite direction and the force acting on car are same. So, their net force is zero.

And in case of F_3 and F_4, the net force will not be zero because force acting on car are different. The car will accelerate towards left direction because F_4 is higher than the F_3.

So, the car will accelerate towards left direction.


3 0
3 years ago
Molecular energies can be expressed as the sum of 4 components: translational, rotational, vibrational, and electronic. Let thes
VikaD [51]

Answer:

The general form of a partition function is a sum over the states of the system,

Explanation:

qTr + qRo+ qVi +qEl= Qt

Qt= total energy

5 0
3 years ago
Using knowledge of intermolecular forces, explain why the yellow food coloring mixed with the water and the acetone was able to
Papessa [141]

The yellow coloring is a polar substance hence it dissolve in water. Blue dye is nonpolar hence it dissolves in less polar acetone.

In chemistry, there is a general rule that like dissolves like. A substance can only dissolve in another if there is some kind of intermolecular interaction between the substances.

The yellow food coloring is a polar substance hence it is able to dissolve in water which is a polar solvent. The blue dye is a nonpolar substance hence it dissolve in acetone which is a less polar solvent.

Learn more:  brainly.com/question/9847214

8 0
3 years ago
Determine whether each statement describes an electromagnetic wave, a mechanical wave, or both types of wave.
KiRa [710]

The question is incomplete, the complete question is;

Which statement describes a difference between electromagnetic and mechanical waves?

A. Mechanical waves cannot be longitudinal, but electromagnetic waves can.

B. Electromagnetic waves cannot move particles, but mechanical waves can.

C. Electromagnetic waves do not require a medium, but mechanical waves do.

D. Mechanical waves do not transfer energy, but electromagnetic waves do.

Answer:

Electromagnetic waves do not require a medium, but mechanical waves do.

Explanation:

A wave is defined as a disturbance along a medium which transfers energy. Waves may be classified as mechanical waves or electromagnetic waves based on their medium of propagation.

A mechanical wave requires a material medium for propagation. An example of a mechanical wave is sound waves. Sound waves are propagated in air.

Electromagnetic waves do not require a material medium for propagation. They can travel through space. An example of electromagnetic waves is light waves.

8 0
3 years ago
The reaction takes place in water. What happens to the equilibrium when the pressure is increased?
Bond [772]
<span>As you have given us no information on what reaction and what equilibrium you refer to, this is impossible to answer!</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • 1. What is the weight of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL
    14·1 answer
  • For which of the following solutions would an increase in pressure result in an increase in solubility of a solute?
    8·1 answer
  • What is the oxidation number of cl− in the perchlorate ion
    13·1 answer
  • How would you find how many unpaired electrons are in a compound? Ex. unpaired electrons in aluminum in aluminum II oxide.
    12·1 answer
  • Help please
    6·2 answers
  • PLEASE PLEASE PLEASE HELP ME CHEM! DUE IN 10 MINS!! 20 POINTS (SPAM COMMENTS WILL BE BLOCKED) GIVING OUT BRAINLIEST
    11·1 answer
  • PLZ SOMEONE HELP I’LL MARK AS BRAINLIEST!!!
    8·1 answer
  • How are compositional layers distinguished?
    12·1 answer
  • Carbon-14 has a half-life of 5715 years. It is used to determine the age of
    10·1 answer
  • Ubica en que regiones externas terminan los electrones de los siguienes elementos y escribe el nombre
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!