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
11111nata11111 [884]
3 years ago
5

A helium balloon is filled on the ground where the atmospheric pressure is 768 torr. The volume of the balloon is 8.00 m3. When

the balloon reaches an altitude of 4200 m, its volume is found to be 16.8 m3. Assuming that the temperature remains constant, what is the air pressure at 4200 m in torr? A. 1.61 x 103 B. 366 C. 543 D. 111 E. 89
Chemistry
1 answer:
Anvisha [2.4K]3 years ago
6 0

Answer:

The correct option is: <u>B. 366 torr</u>

Explanation:

Given: <u>On the ground</u>- Initial Volume: V₁ = 8.00 m³, Initial Atmospheric Pressure: P₁= 768 torr;

<u>At 4200 m height</u>- Final Volume: V₂ = 16.80 m³, Final Atmospheric Pressure: P₂ = ?

Amount of gas: n, and Temperature: T = constant

<u>According to the Boyle's Law</u>, for a given amount of gas at constant temperature:         P₁ V₁ = P₂ V₂

⇒  P₂ = P₁ V₁ ÷ V₂

⇒  P₂ = [(768 torr) × (8.00 m³)] ÷ (16.80 m³)

⇒  P₂ = 365.71 torr ≈ 366 torr

<u>Therefore, the final air pressure at 4200 m height: P₂ = 366 torr.</u>

You might be interested in
Hydrogenated fats are produced by passing hydrogen gas over long saturated carbon chains. A
REY [17]
Hdhdhhrhrbfbdbdbdbfbfbbfbfbfb
8 0
3 years ago
What is the number of moles of solute in 250 mL of a 0.4 M solution?
mafiozo [28]

Answer:

0,1 mol

Explanation:

We know that the formula of concentration is C= moles of solute/ volume  

0,4 M= moles of solute/ 250 mL

Convert mL to L      250 mL =0,25 L

0,4 M x 0,25 L= moles of solute

0,1 moles= moles of solute

3 0
3 years ago
What is one way to test whether an unknown solution is acidic or basic?
sertanlavr [38]

Answer: There are several ways. The first that comes to mind is a pH meter. A pH electrode Is lowered into the solution, and (Assuming) the pH Meter has been properly calibrated, and the temperature of the solution is set to the calibration of the Meter, the pH can be read directly from an analogue scale or digital readout. Below 7 is acidic, 7 is Neutral, (like Pure Water), and over 7 is Alkaline, or Basic.

A useful, but less accurate method is the use of any number of “pH Indicator Solutions”, which are essentially a type of various colored dyes that change color within differing pH ranges. Usually, if the pH is unknown, a small amount of solution is removed from the container and tested separately - in a “well plate”, or similar method.

These types of dyes, or Indicator Solutions, can be dried upon strips of “pH indicator Paper”, which, depending upon the type can be very useful when carrying out more precisely arrived at pH tests like Titration.

Just to see if a solution is “Acid” or “Base”, Litmus paper is used; “a Red color shows Acidity, and a Blue color, a Base”; ergo, “An Acid Solution will turn Litmus Paper, Red”.

4 0
3 years ago
When light rays appear to be coming from behind a mirror, what type of image has been formed?
Setler79 [48]
Plane is the right answer I thinkkkkk
4 0
3 years ago
Read 2 more answers
The combustion of carbohydrates and the combustion of fats are both exothermic processes, yet the combustion of carbohydrates is
saveliy_v [14]

Explanation:

Combustion of a compound is the reaction with oxygen , hence , the process of combustion is an oxidation reaction.

The carbohydrates contain more amount of oxygen as compared to the fats ,

Hence ,

carbohydrates , have a lot of oxygen contents , are are already partially oxidized , but fats have lower oxygen content .

Therefore ,

The partially oxidized carbohydrates are very difficult to oxidized in comparison to fats .

4 0
3 years ago
Other questions:
  • The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below
    15·2 answers
  • How do I find the number of neutrons in an atom?
    7·2 answers
  • A reaction product mixture containing hydrocarbons in diethyl ether is washed with saturated aqueous sodium chloride (brine) sol
    5·1 answer
  • What atomic nucleus has the fewest protons
    9·1 answer
  • When marco is sick, he tests the ph of his saliva and finds that it is 6.1. what is the hydrogen ion concentration of his saliva
    12·1 answer
  • What happens acoss the period of the periodic table
    6·1 answer
  • What keeps the Earth's atmosphere from floating away?
    7·2 answers
  • A pH of 15.0<br> a. is not possible.<br> b. is a base.<br> c. is an acid.<br> d. is a neutral.
    13·1 answer
  • What are the mountainous parts of the moon called? Question 3 options: craters terrae maria regolith
    12·2 answers
  • What is defined as the plants and animals and the physical surroundings, including the sun, air, soil, and water?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!