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
worty [1.4K]
3 years ago
13

Larisa pumps up a soccer ball until it has a gauge pressure of 61 kilopascals. The volume of the ball is 5.2 liters. The air tem

perature is 32°C, and the outside air is at standard pressure. How many moles of air are in the ball?
Chemistry
1 answer:
kirill115 [55]3 years ago
7 0

The total ball pressure is sum of gauge pressure and atmospheric pressure

We know that atmospheric pressure = 101.325 kPa

so the total ball pressure = 61 kPa + 101.325 kPa = 162.325 kPa

Now we will use ideal gas equation as

PV = nRT

P = pressure = 162.325 kPa

V = 5.2 L

R = gas constant = 8.314 kPa  L / mol K

T = 32 C = 273.15 + 32 = 305.15 K

n = moles = ?

Moles = PV / RT = 162.325 kPa X 5.2 / 305.15 X 8.314 = 0.332 moles

You might be interested in
Li+1 had gained ______ one electron
zysi [14]
Maybe molecules one electron
3 0
3 years ago
What happens to the light ray when it hits the boundary between water and glass
torisob [31]

Answer: If the light ray hits the boundary at an angle which is not perpendicular to or parallel to the surface, then it will change direction and appear to `bend'

Hope This Helps You! :D

6 0
3 years ago
A gaseous mixture contains 434.0 Torr H 2 ( g ) , 434.0 Torr H2(g), 389.9 Torr N 2 ( g ) , 389.9 Torr N2(g), and 77.9 Torr Ar (
weqwewe [10]

Answer:

H₂: 0.48,  N₂: 0.43;  Ar: 0.09

Explanation:

First of all, sum all the pressures to know the total pressure in the mixture.

434 Torr + 389.9 Torr + 77.9 Torr = 901.8 Torr

Mole fraction = Pressure gas / Total Pressure

Mole Fraction H₂: 434 Torr /901.8 Torr = 0.48

Mole Fraction N₂: 389.9 /901.8 Torr =0.43

Mole Fraction Ar:  77.9 /901.8 Torr = 0.09

Remember: <u>SUM OF MOLE FRACTION = 1</u>

8 0
3 years ago
2-butanone is converted into 3-methyl-3-hexanol using a grignard reagent prepared from 1-bromopropane and magnesium metal in thf
Andre45 [30]

Answer:

Here's what I get.

Explanation:

At the end of the reaction you will have a solution of the alcohol in THF.

The microdistillation procedure will vary, depending on the specific apparatus you are using, but here is a typical procedure.

  • Transfer the solution to a conical vial.
  • Add a boiling stone.
  • Attach a Hickman head (shown below) and condenser.
  • Place the assembly in in the appropriate hole of an aluminium block on top of a hotplate stirrer.
  • Begin stirring and heating at a low level so the THF (bp 63 °C) can distill slowly.
  • Use a Pasteur pipet to withdraw the THF as needed.
  • When all the THF has been removed, raise the temperature of the Al block and distill the alcohol (bp 143 °C).

7 0
3 years ago
A graph of 1/[A]t vs. time will give you a straight line if the reaction is which order?
castortr0y [4]
The answer is:  "second order" .
__________________________________________________
5 0
3 years ago
Other questions:
  • What is the interval used on the y-axis of this graph?
    9·1 answer
  • What is the mass of 2.3 x 1021 formula units of cobalt(II) bromate?
    7·1 answer
  • How many milliliters of calcium, with a density of 1.55 g/mL, are needed to produce 98.5 grams of calcium hydroxide in the singl
    9·1 answer
  • How can the electromagnetic force be increased? What different things affect the magnetic strength?
    11·1 answer
  • Lewis dot structure
    15·2 answers
  • If I have 4 moles of gas at a pressure of 7.6 atm and a volume of 19 liters, what is the temperature?
    12·1 answer
  • What is the minimum cation-to-anion radius ratio (rC/rA) for an octahedral interstitial lattice site?
    11·1 answer
  • 18- The number of orbitals in each sublevel are:
    11·1 answer
  • PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!
    14·1 answer
  • A sample of ammonia has a mass of 45.5g. how many molecules are in this sample​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!