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
Alenkinab [10]
3 years ago
11

7. How many moles of argon are there in 20.0 L, at 25 degrees Celsius and 96.8 kPa?

Chemistry
2 answers:
suter [353]3 years ago
4 0
<h3>Answer:</h3>

              0.8133 mol

<h3>Solution:</h3>

Data Given:

                 Moles  =  n  =  ??

                 Temperature  =  T  =  25 °C + 273.15  =  298.15 K

                  Pressure  =  P  =  96.8 kPa  =  0.955 atm

                  Volume  =  V  =  20.0 L

Formula Used:

Let's assume that the Argon gas is acting as an Ideal gas, then according to Ideal Gas Equation,

                  P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for n,

                  n  =  P V / R T

Putting Values,

                  n  =  (0.955 atm × 20.0 L) ÷ (0.082057 atm.L.mol⁻¹.K⁻¹ × 298.15 K)

                 n  =  0.8133 mol

Serhud [2]3 years ago
3 0

The moles  of argon that  are there in 20.0  L ,  at 25 c  and  96.8 KPa is  =  0.7814  moles


 <em><u>calculation</u></em>

  • by use of the ideal gas  equation

         that is PV=nRT  where;

      P(pressure)= 96.8 kpa

      V(volume)=  20.0 L

     n (moles) = ?

      R( gas constant)=  8.314  kpa/k/mol

      T( temperature)=  25 +273= 298 K

  • make n the formula of the subject

          n = PV/RT


  • n is  therefore= [ (96.8 KPa  x 20.0 l) /( 8.314  kpa/k/mol  x  298 k)]

  • answer =0.781  moles

   

You might be interested in
What is the pH of 1.00 L of a buffer that is 0.110 M nitrous acid (HNO2) and 0.200 M NaNO2? (pKa of HNO2 = 3.40)
Andrei [34K]

Answer:

pH = 3.65    

Explanation:

given data

pKa of HNO2 = 3.40

nitrous acid (HNO2) = 0.110 M

NaNO2 = 0.200 M

to find out

What is the pH

solution

we get here ph for acidic buffer  that is express as

pH = pKa + log(salt÷acid)      ........................1

put here value and we get

pH = 3.40 + log(0.200÷0.110)

pH = 3.65    

4 0
3 years ago
Read the passage below and choose the best answer for the main idea of the passage:
Crank

Answer: C

Explanation:

4 0
3 years ago
Jan was told by her mother to clean a kettle which had a heavy deposit of limescale. Her friends suggested the following product
Drupady [299]

Answer:

what happened when they removed the limescale?

Explanation:

3 0
2 years ago
How can you tell what is what and how that what affects what
VLD [36.1K]

Answer:

Hi, this is a super vague question, so its pretty confusing to answer.  Could you please be a bit more specific?

If you are referring to chemistry, then how you tell "what is what" is by the molecular makeup of an element (Periodic table), and "how that..affects what", chemical reactions can occur between elements

8 0
3 years ago
Read 2 more answers
Five strategies needed by learners to acquire knowledge and skills to make informed decisions and take appropriate actions to en
otez555 [7]
The five strategies could include; 1) research the question of clean water availability on line and in books (2 strategies), 2) interview or ask those affected by lack of availability of clean water and find out how it affects them 3) consult with other groups ie political groups also concerned with this question and find out what they did to ensure availability to clean water and lastly to take actions to fight for the accessibility of clean water for certain groups of people like the First Nations people on reserves in Canada.
6 0
2 years ago
Other questions:
  • Which list of formulas represents compounds, only?
    8·2 answers
  • What is the name of the covalent compound CCl4?
    11·1 answer
  • A compound is formed when 12.2 g Mg combines completely with 5.16 g N. What is the percent composition of this compound? Please
    11·1 answer
  • An air/gasoline vapor mix in an automobile cylinder has an initial temperature of 180 ∘C and a volume of 13 cm3 . If the mixture
    7·1 answer
  • PLEASE HELP!!
    12·2 answers
  • Select all (there's more than one) of the below chemicals that would be insoluble in water.
    9·1 answer
  • Calculate the molar solubility of PbCO3 when the Ksp of PbCO3 is 1.5*10^-15 at 25°C.
    9·1 answer
  • Can someone please help me
    14·1 answer
  • What is the answer:<br>C4H8+H2=​
    11·1 answer
  • Help plzzzzzz ill give brainliest​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!