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
Vlad1618 [11]
3 years ago
6

A balloon is filled to a volume of 18.9L at a temperature of 27.1ºC. If the pressure in the balloon is measured to be 2.20 atm,

how many moles of gas are contained inside the balloon?
Chemistry
1 answer:
ryzh [129]3 years ago
4 0

<u>Answer:</u> The number of moles of gas in balloon is 1.69 moles

<u>Explanation:</u>

To calculate the number of moles of gas, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 2.20 atm

V = Volume of the gas = 18.9 L

T = Temperature of the gas = 27.1^oC=[27.1+273]=300.1K

R = Gas constant = 0.0821\text{ L. atm }mol^{-1}K^{-1}

n = number of moles of gas = ?

Putting values in above equation, we get:

2.20atm\times 18.9L=n\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 300.1K\\\\n=\frac{2.20\times 18.9}{0.0821\times 300.1}=1.69mol

Hence, the number of moles of gas in balloon is 1.69 moles

You might be interested in
What are three factors that control deep currents?
Lyrx [107]
Global winds, coriolis effect and <span>continental deflections. Hope this helps!</span>
8 0
3 years ago
The atomic mass of seven atoms of antimony is ?
son4ous [18]

Answer:

Percent composition by element

Element Symbol Atomic Mass

Antimony Sb 121.760

Explanation:

6 0
3 years ago
At rest, a neuron has a lower concentration of sodium than the surrounding fluid. The neuron also has a higher concentration of
pshichka [43]

Answer:

a. Remaining at rest requires the use of ATP.

Explanation:

The resting membrane potential is maintained by the sodium-potassium pump. The sodium potassium pump does this by actively pumping sodium ions out of the cell and potassium ions inside the cell in a ratio of 3:2. This movement of ions by the sodium-potassium pump is against their concentration gradient. In a neuron at rest, there are more sodium ions outside the cell than there are inside the cell. Also, there are are more potassium ions inside the cell than there are outside the cell. However, there are ion channels through which these ions enter and leave the cell. Sodium ion channels allow sodium to enter the cell following its concentration gradient, whereas, potassium ion channels allow potassium to leave the cell following its concentration gradient. However, more potassium ions leave the cell than do sodium ions enter the cell because of the higher permeability of the cell to potassium ions.

In order to maintain the resting membrane potential, the sodium potassium pump powered by the hydrolysis of an ATP molecules pumps sodium ions out of the cell and potassium ions into the cell.

<em>Therefore, the correct option is A, as ATP is needed by the sodium-potassium pump in order to maintain the resting membrane potential.</em>

6 0
3 years ago
How many protons and neutrons are there in an atom of boron11?
Komok [63]
5 protons and six neutrons
6 0
3 years ago
If a 1.50 L gas sample is held at a constant temperature, and its pressure is changed from 2.30 atm to 3.60 atm, what will the f
likoan [24]

Answer:

the new temperature is 11.49pa

8 0
3 years ago
Other questions:
  • 4.87 x 103 + 1.092 x 107 =
    9·2 answers
  • How to test a hypothesis using scientific inquiry?
    6·1 answer
  • An ideal gas is contained in a cylinder with a volume of 5.0×102 mL at a temperature of 30. ºC and a pressure of 710. torr. The
    5·1 answer
  • Why are significant figures NOT important when solving problems in your math class?
    11·1 answer
  • Regarding the Lyman series of hydrogen, calculate the frequency of the n = 5 line.
    7·1 answer
  • A certain intermolecular force is created due to a brief concentration of electrons between nonpolar molecules. What best explai
    6·2 answers
  • Five gases combined in a gas cylinder have the following partial pressures: 3.00 atm (N2), 1.80 atm (O2), 0.29 atm (Ar), 0.18 at
    6·2 answers
  • How are plastic containers and paper containers the same
    12·1 answer
  • Calculate the molar mass of Al2O3.<br> A) 70 g/mol B) 43 g/mol C) 102 g/mol<br> D) 210 g/mol
    15·1 answer
  • I need help, plz help me with this problem
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!