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
docker41 [41]
1 year ago
13

A 45. 0 l gas cylinder contains 988 g he at 23 °c. what is the pressure inside the cylinder? (r = 0. 08206 l⋅atm/mol⋅k)

Chemistry
1 answer:
mr_godi [17]1 year ago
4 0

A 45. 0 L gas cylinder contains 988 g He at 23 °C then pressure inside the cylinder is  134.67 atm.

Calculation,

Formula used :The ideal gas equation is given as,

PV = nRT                       ....(i)

Where , P is pressure of the gas = ?

V = volume of the gas =  45. 0 L

R = universal gas constant =  0. 08206 L⋅atm/mol⋅K

T = Temperature = 23 °C = 23 + 273 = 299 K

n = number of moles = given mass/ molar mass =  988 g/4 = 247 moles

Putting the value of P , V , T , R and n in equation (i) we get

P×45. 0 L  =  247 moles× 0. 08206 L⋅atm/mol⋅K×299 K

P = 247 moles× 0. 08206 L⋅atm/mol⋅K×299 K /45. 0 L = 134.67 atm

learn more about pressure

brainly.com/question/12611523

#SPJ4

You might be interested in
What are composites?
Natasha_Volkova [10]

By integrating two or even more materials whose properties are quite distinctive is composite materials. The different materials work together to build special properties for the composite, but within the composite one can easily tell the various materials apart that they don't dissolve or mix together.

It is also recognized as Fiber-Reinforced Polymer (FRP) composites, which are constructed from a polymer matrix strengthened with engineered, man-made or natural fiber like glass, steel or aramid or other strengthening material.

  • Their high dimensional consistency helps them to preserve their shape, be it hot or cold, wet or dry.
  • This renders them a common material for outdoor frameworks such as wind turbine blades.
  • These have less resistance to cracking than metals but more durability than most polymers.
5 0
3 years ago
Which of the following representations shows the correct placement of trophic levels?
OleMash [197]
You have to start listing from the bottom :

3. Secondary Consumers

2. Primary Consumers

1. Producer

4 0
3 years ago
How many moles are contained in a 4.67-l sample of gas at 30 c and 199 kpa?
valentina_108 [34]

Using ideal gas equation,

PV=nRT

P=199 kpa

V=4.67 L

T=30+273K= 303K

n= number of moles of gas

R=8.321 L·kPa·K-1·mol-1

So using ideal gas equation,

n=PV/RT

=199*4.67/8.321*303\

=0.37 mol

3 0
4 years ago
Read 2 more answers
A 13.0% solution of K2CO3 by mass has a density of 1.09 g/cm3. Calculate the molality of the solution.
Bingel [31]

Answer:

Signs and symptoms of mental illness can vary, depending on the disorder, circumstances and other factors. Mental illness symptoms can affect emotions, thoughts and behaviors.

Examples of signs and symptoms include:

Feeling sad or down

Confused thinking or reduced ability to concentrate

Excessive fears or worries, or extreme feelings of guilt

Extreme mood changes of highs and lows

Withdrawal from friends and activities

Significant tiredness, low energy or problems sleeping

Detachment from reality (delusions), paranoia or hallucinations

Inability to cope with daily problems or stress

Trouble understanding and relating to situations and to people

Problems with alcohol or drug use

Major changes in eating habits

6 0
3 years ago
Which bond is broken when energy is released?
blsea [12.9K]
Energy is released when a new bonds form.
4 0
4 years ago
Read 2 more answers
Other questions:
  • How does chemistry help you when you are doing your homework?
    9·1 answer
  • Who is Alfred Wegener? What did he discover?
    14·1 answer
  • 1.93•100^18 shshshshshshs
    12·1 answer
  • When 15.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp?
    8·1 answer
  • The cross bridge cycle starts when _________.
    6·1 answer
  • When all the colors of light are mixed what is the resulting color <br> blue red white or black
    8·2 answers
  • In order to listen to the radio you need to use ______________ and _________ waves.
    6·2 answers
  • What does a reaction not depend on?
    10·1 answer
  • GIVING BRAINLEST ASAP IM BEING TIMED
    12·1 answer
  • How many mols in 22.45g of water?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!