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
daser333 [38]
3 years ago
12

Given a volume of 47.8 mL of gas at STP, _______________ moles of O2 exist

Chemistry
1 answer:
Zinaida [17]3 years ago
6 0
At STP, a mole of any gas occupies 22.4 L. So given 48.7 mL—or 0.0487 L—of O2 gas at STP, the number of moles of O2 that exist is 0.00217 moles.
You might be interested in
there are 3 isotopes of the element Gz: Gz-80,Gz-81,Gz-83. the average atomic mass of Gz is 82.74. what is the most abundant iso
Romashka-Z-Leto [24]

The most abundant isotope is Gz-83 because the average atomic mass of Gz is closer to 83.

The average atomic mass is defined as the weigthed mean of the isotopes.

The mass of the isotopes is 80, 81 and 83 uma, respectively.

As the average atomic mass (82.74uma) is closer to the atomic mass of Gz-83 than the mass of the other isotopes, you can interpretate that the most abundant isotope is Gz-83.

Learn more about average atomic mass in:

brainly.com/question/21536220

5 0
2 years ago
Materials that cannot carry electric energy are called
kompoz [17]

Answer:

They are called insulators

5 0
3 years ago
Which of the following is the most common gas in the troposphere
Effectus [21]
The most common gas in the troposphere is nitrogen. 

I hope this helps!
7 0
3 years ago
Read 2 more answers
When 250 ml of water is added to 35 ml of 0.2 M HCl
Paladinen [302]
Assuming that you’re looking for the concentration of water in the solution, then it would be 0.028 M.

You would have to use the formula:
c1v1 = c2v2, where c =concentration and
v = volume

C1 = ?
V1 = 250 mL
C2 = 0.2 M
V2 = 35 mL

C1 x 250 mL = 0.2 M x 35 mL

C1 = (0.2 M x 35 mL) / 250 mL

C1 = 0.028 M of water added to 35mL of 0.2M HCl

Therefore, there is 0.028 M of water added to 35mL of 0.2M HCl
8 0
3 years ago
Read 2 more answers
Which statement correctly explains how magnesium and chlorine combine to form magnesium chloride?
AysviL [449]
You did not include the statements but since magnesium chloride is ionic substance that we know that magnesium and chlorine formed an ionic bond.  Therefore your statement most likely will talk about how one magnesium atom gave up 2 electrons while two chlorine atoms took 1 electron.  The reaction looks like Mg+2Cl⇒MgCl₂.  
I hope this helps.  Let me know in the comments if anything is unclear.
4 0
3 years ago
Read 2 more answers
Other questions:
  • How many molecules are in 7.90 moles of CH4?
    12·1 answer
  • Draw the products of the acid-base reaction between stearic acid and OH-
    6·1 answer
  • Use the ruler to determine the length of the line measured to the correct degree of precision. 13.2 cm 13.25 cm 130 cm 132 mm
    8·2 answers
  • How are scientists able to study the composion of a star that is located out of the solar system
    11·1 answer
  • 36. Write the SHORTCUT electron configuration for Caesium (Cs) which is element #55.
    7·1 answer
  • Hey guys girls ppls anyone wanna talk....
    5·2 answers
  • Classification of organisms allow the identification of shared characteristics, which reveals how organisms interact with the co
    7·2 answers
  • A buffer solution is prepared by adding NaH2PO4 to a solution of H3PO4 (phosphoric acid).
    15·1 answer
  • How are you doing? <br> A. Good <br> B. Bad <br> C. Sad.<br> D. Everything/nothing
    14·2 answers
  • Evidence that living things have evolved over hundreds of millions years can be found in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!