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
vekshin1
3 years ago
10

What is the mass of 3.0 x 1023 atoms of neon

Chemistry
2 answers:
Xelga [282]3 years ago
8 0
1 mole =6.0 * 10^23 atoms
3.0*10^23 atoms = 0.5 moles
the molar mass of neon is 20.18g/mole
0.5 moles = 10.09 grams
Alex Ar [27]3 years ago
5 0
6.022×10^23 atom=20 gm
3×1023 atom= 20×3×1023/6.022×10^23
ans =1.019×10^-19
You might be interested in
To separate a mixture of iron filings and salt, the most efficient method would be
GaryK [48]

Answer:

Explanation:

Of course you could do the separation chemically. Dissolve the salt up in water, pass thru a filter, wash the iron filings with ethanol, which would encourage the salt to precipitate from solution.

I do hope I helped you! :)

4 0
3 years ago
An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?
skelet666 [1.2K]

Answer:

C,D.

Explanation:

Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth's surface. These are the rocks that form at erupting volcanoes and oozing fissures.

3 0
3 years ago
Read 2 more answers
What is the major product in this reaction
Butoxors [25]

Answer:

I think option A is right answer

4 0
2 years ago
13. A mixture of MgCO3 and MgCO3.3H2O has a mass of 3.883 g. After heating to drive off all the water the mass is 2.927 g. What
rjkz [21]

Answer:

63.05% of MgCO3.3H2O by mass

Explanation:

<em>of MgCO3.3H2O in the mixture?</em>

The difference in masses after heating the mixture = Mass of water. With the mass of water we can find its moles and the moles and mass of MgCO3.3H2O to find the mass percent as follows:

<em>Mass water:</em>

3.883g - 2.927g = 0.956g water

<em>Moles water -18.01g/mol-</em>

0.956g water * (1mol/18.01g) = 0.05308 moles H2O.

<em>Moles MgCO3.3H2O:</em>

0.05308 moles H2O * (1mol MgCO3.3H2O / 3mol H2O) =

0.01769 moles MgCO3.3H2O

<em>Mass MgCO3.3H2O -Molar mass: 138.3597g/mol-</em>

0.01769 moles MgCO3.3H2O * (138.3597g/mol) = 2.448g MgCO3.3H2O

<em>Mass percent:</em>

2.448g MgCO3.3H2O / 3.883g Mixture * 100 =

<h3>63.05% of MgCO3.3H2O by mass</h3>
6 0
3 years ago
Determine the the mass of one molecule of hydrogen sulfide gas.
Alchen [17]

Answer:

the molecular mass of hydrogen sulphide, which contains two atoms of hydrogen and one atom of sulphur is = 2 — 1 + 1 — 32 = 34 a.m.u.

6 0
3 years ago
Other questions:
  • What is the electron structure of a sodium atom?
    8·2 answers
  • Which of the following has the least resistance to electric flow? metal
    12·1 answer
  • Help meeeeeeeeeeeeeeeee
    8·1 answer
  • What is the difference between a primitive and body centered unit cell?
    7·1 answer
  • What is the madd in grams of 0.40 moles of sodium borohydride, NaBH4
    6·1 answer
  • Cual es el numero de oxidacion de la respiración​
    6·1 answer
  • 1. element with three occupied energy levels and<br> one valence electron
    13·1 answer
  • Determine the oxidation number of C in H​
    15·1 answer
  • Electrical Safety Test Take Exam
    11·1 answer
  • You have 500,000 atoms of a radioactive substance. After 2 half-lives have past, how many atoms remain?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!