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
tatyana61 [14]
3 years ago
10

A sample that weighs 107.75 g is a mixture of 30% helium atoms and 70% krypton atoms. How many particles are present in the samp

le?
Chemistry
1 answer:
r-ruslan [8.4K]3 years ago
5 0
<span>A sample that weighs 107.75 g is a mixture of 30% helium atoms and 70% krypton atoms. How many particles are present in the sample?    </span>3.59
You might be interested in
A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15.° C . After 10 minutes of
Yuliya22 [10]

Answer:

34 g/100 mL

Explanation:

The solubility of a compound can be expressed in g/100mL, for this we must divide the mass of the compound that dissolves in the solute by the volume of the solvent.

The solvent, in this case, is water, and that mass of the solute X that dissolved is the mass that was recovered after the solvent was drained and evaporated. So the solubility of X (S) is:

S = 0.17 kg/5L

S = 170g/5000mL

S = 170g/(5*1000)mL

S = 34 g/100 mL

8 0
3 years ago
Nkjnkjnknjknkjnnkjnknjkkjnjknj
ollegr [7]

Answer:

what

Explanation:

3 0
2 years ago
Read 2 more answers
Jonathan is working in his basement on a science fair project when his little sister closes and locks the door. Jonathan wants t
solmaris [256]

Answer:

he can bang metal pipes but i would rather say that he has to yell for help

Explanation:

why because the basement is very loud and echo so when is parents hear him they can run to basement and get him out

hope this helped

4 0
3 years ago
Read 2 more answers
What are 3 permeable materials
gizmo_the_mogwai [7]
Permeable materials for what 
4 0
3 years ago
Read 2 more answers
If you exhale 7.25×10 to the 24th power molecules of CO2. How many moles of CO3 do you exhale?
Assoli18 [71]
None   since CO3   does   not exist.
7 0
3 years ago
Other questions:
  • Which is not a consequence of hydrogen bonding between water molecules?
    8·1 answer
  • Can you plz answer this question: The ocean supply about 90 percent of the ————— water that goes inti the water cycle
    9·1 answer
  • What takes pictures of clouds and storm systems from the exosphere
    11·1 answer
  • A student comes to the conclusion that solids are denser than liquids. Is this true? Explain.
    14·1 answer
  • A car can accelerate from a standstill to 100 km/h [E] in 9.60s. calculate the average acceleration
    8·1 answer
  • Determine the mass of 10.55 x 1029 molecules of cadmium chloride, CdCl,().
    12·1 answer
  • A) Calculate the molar mass of ethanol, C2H5OH and water, H20.<br> C2H5OH =<br> H2O =<br> I
    9·1 answer
  • An example of a change of state is __________. *
    14·2 answers
  • What season is it in earths northern hemisphere when earths northern hemisphere tilts toward the sun
    11·2 answers
  • A key bed is a layer of rock that looks similar to the layers around it.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!