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
Montano1993 [528]
2 years ago
14

Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 37 ∘C, and a pressure of 7

40 torr .
Chemistry
2 answers:
Zinaida [17]2 years ago
7 0
PV = nRT 
R = 0.0821 L * atm / mol * K 
(ideal gas constant) 

First, convert 735 torr to atm. Divide by 760. 
(1 atm = 760 torr) 

735 torr * 1 atm / 760 torr = 0.967 atm 
Then, convert 37 C to Kelvin. Just add 273. 
37 C = 310K 

n = PV / RT 
= (0.967)(2.07) / (0.0821)(310) 
= 0.0786 mol 

<span>0.0786 mol * 6.02 * 10^23 molecules / 1 mol = 4.73 * 10^22 molecules </span>
ololo11 [35]2 years ago
6 0
PV=nRT
n= \frac{PV}{RT}
n= \frac{740 torr*2.15 L}{62.4 \frac{torr*L}{mol*K} *(37celsius+273)}
n = 0.0822 mol
0.0822 mol*6.022*10 ^{23}  = 4.95*10 ^{22} molecules
You might be interested in
What are three Possible overlaps that can occur during bond formation​
mart [117]

Answer:

The Sigma (σ) Bond

S-S Overlapping. In this kind of overlapping, one 's' orbital from each participating atom undergoes head-on overlapping along the internuclear axis. ...

S-P Overlapping. ...

P-P overlapping.

4 0
2 years ago
True or false natural elements don't reflect light.
Burka [1]
I think the statement is false. Natural elements do reflect light. Almost everything in this world reflect light. Reflection<span> is when </span>light<span> bounces off an object. Hope this answers the question. Have a nice day.</span>
3 0
3 years ago
Which of the following procedures is used during the fractional distillation of petroleum?
dem82 [27]
Increase at the temperature
7 0
2 years ago
How many chromsomes does an elephant egg have?
Artyom0805 [142]
A elephant egg cell has 28 chromosomes.
Both elephant egg and sperm cell make a zygote with 56 chromosomes.
7 0
3 years ago
A 1.5L intraveneous (IV) solution contains 919 grams glucose (C6H12O6). What is the molarity of this solution?
AleksandrR [38]

Answer:

3.4 M

Explanation:

M = grams/molar mass = ans./volume(L)

M = 919/180 = ans./1.5

3 0
3 years ago
Other questions:
  • What is the organelle that packages and releases materials other parts of the cell?
    9·1 answer
  • Which of the following tends to form anions when bonding with other elements?
    14·2 answers
  • How to make a lightsaver
    12·1 answer
  • A sample of the inhalation anesthetic gas Halothane, in a 500-mL cylinder has a pressure of 2.3 atm at 0°C. What will be the pre
    6·2 answers
  • I need help with these 4
    14·1 answer
  • Which one of the following statements is true?
    8·1 answer
  • Which of these is NOT a characteristics of minerals?
    10·2 answers
  • Help me ples HELP HELP HELP HELP HELP
    9·1 answer
  • Balancing Equations help (please explain)
    9·1 answer
  • How many grams of sodium carbonate are present after the reaction is complete?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!