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
Komok [63]
2 years ago
9

Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simulta

neously. After a certain amount of time, it was found that 8.44 mL of O2 had passed through the membrane, but only 3.95 mL of of the unknown gas had passed through. What is the molar mass of the unknown gas?

Chemistry
1 answer:
Vilka [71]2 years ago
8 0

Answer:

147.2g

Explanation:

The full solution can be found in the image attached. Graham's law was applied to the problem. The rate of diffusion of a gas is inversely proportional to its molar mass or vapour density. Molar mass= 2vapour density

You might be interested in
How do scientist communicate the results of an investigation?​
maks197457 [2]

Answer:

scientists often communicate their research results in three general ways:

1) One is to publish their results in peer-reviewed journals that can be ready by other scientists.

2) Two is to present their results at national and international conferences where other scientists can listen to presentations

Explanation:

5 0
3 years ago
Read 2 more answers
Compared to orange light, violet light
natulia [17]

Answer:

i think it was lll,lV ㄸㄸㅇㅊㅎㅍㅋ

5 0
3 years ago
Why is ethanol a member of the homologous series of alcohols but propane is not<br> I’m in the exam!
Mumz [18]

Answer:

I hope it helps..... you can stop at the full-stop

3 0
2 years ago
electron affinity of lithium is -60 whereas of cesium is -45.this trend is due to... plz give me accurate answer
lesya692 [45]
Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.


Electron Affinity of Lithium is 59.6 kJ/mol.

Electron Affinity of Caesium is 45.5 kJ/mol.

Electron Affinity of Lithium is 59.6 kJ/mol. Electronegativity of Lithium is 0.98. ... Electron affinities are more difficult to measure than ionization energies. An atom of Lithium in the gas phase, for example, gives off energy when it gains an electron to form an ion of Lithium.

Trends

The ionization energy of the elements within a period generally increases from left to right. This is due to valence shell stability.

The ionization energy of the elements within a group generally decreases from top to bottom. This is due to electron shielding.

The noble gases possess very high ionisation energies because of their full valence shells as indicated in the graph. Note that helium has the highest ionization energy of all the elements.
4 0
2 years ago
How many molecules are there in 2.3g Of carbon
Alexxandr [17]

Answer: 1.15x10²³ molecules C

Explanation: solution attached:

Convert mass of C to moles using its molar mass then multiply to the Avogadro's number.

8 0
2 years ago
Read 2 more answers
Other questions:
  • Definition To: The capacity for doing work. It may be transformed from one form to another.
    15·1 answer
  • A 44.8 g rhodium sample contains how many rhodium atoms
    8·1 answer
  • The orbital radius of Venus is 0.72 AU. What is this distance in kilometers? (One AU is about 150 million kilometers.)
    13·1 answer
  • How does sediment form?
    8·2 answers
  • Is iron oxide an insulator or conductor?
    6·1 answer
  • What did scientists mix to make the savanna cat
    10·2 answers
  • A solution containing HCI would likely have
    10·2 answers
  • How many electrons does Co2- have?
    8·2 answers
  • A student calculates that the volume of his textbook is 991.880 cm3. what is the volume written with 3 significant figures?
    5·1 answer
  • 1. 2. LEVEL1 A. In each group, choose the objects that has the property given in brackets
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!