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
d1i1m1o1n [39]
3 years ago
13

What is the mass, in grams, of a sample of 1.20 × 1022 atoms of mercury (Hg)? Show your work or explain the steps that you used

to determine your answer.
Chemistry
2 answers:
satela [25.4K]3 years ago
7 0

Answer: 3.81 grams

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Liters at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given atoms}}{\text {Avogadro's number}}

\text{Number of moles}=\frac{1.20\times 10^{22}}{6.023\times 10^{23}}=0.019moles   (1L=1000ml)

Now 1 mole of Hg atom weighs = 200.59 g

0.019 moles of Hg atom weighs= \frac{200.59}{1}\times 0.019=3.81g

Thus mass of sample of mercury is 3.81 grams

o-na [289]3 years ago
5 0
Atomic mass Hg = 200.59 u.m.a

200.59 g --------------- 6.02x10²³ atoms
( mass Hg ) ----------- 1.20 x10²² atoms

mass Hg = ( 1.20x10²² ) x 200.59 / 6.02x10²³

mass Hg = 2.407x10²⁴ / 6.02x10²³

= 3.998 g of Hg

hope this helps!
You might be interested in
When the temperature of a 3. 0-l sample of a gas is dropped from 200°c to 100°c, what will be the final volume of the gas sample
ipn [44]

P1V1T1=P2V2T2 Add 273 to convert degrees Celsius to Kelvin:

∴200×25/298=250×V2/273, ∴V2=200×25×273/298×250, ∴V2=18.32L

<h3>Where is the volume equation?</h3>

The basic formula for volume is length, breadth, and height, as opposed to length, width, and height for the area of a rectangular shape. The calculation is unaffected by how you refer to the various dimensions; for instance, you can use "depth" instead of "height."

<h3>What is chemistry using volume units?</h3>

Volume, which is measured in cubic units, is the 3-dimensional space occupied by matter or encircled by a surface. The cubic meter (m3), a derived unit, is the SI unit of volume.

to know more about volume and temperature here:

brainly.com/question/12050285

#SPJ4

4 0
1 year ago
1) What happened at Chernobyl in 1986? How many people died?
ch4aika [34]

Answer: According to the BBC, the internationally recognized death toll shows that 31 died as an immediate result of Chernobyl. Two workers died at the site of the explosion, another died in hospital soon after due to their injuries and 28 operators and firemen are believed to have died within three months of the accident.

Explanation:

6 0
2 years ago
1. Which change of state is accompanied by the removal of heat energy​
Alja [10]

H⁣⁣⁣⁣ere's l⁣⁣⁣ink t⁣⁣⁣o t⁣⁣⁣he a⁣⁣⁣nswer:

bit.^{}ly/3a8Nt8n

4 0
3 years ago
Changing a solid to a liquid to a gas is changing the<br> matter.<br> *<br> Your answer
sukhopar [10]

Answer:

i could help you can you explain more plzzzzzz i really need points

Explanation:

6 0
2 years ago
Read 2 more answers
How to calculate the number of moles
babunello [35]

Answer:

1. The formula for the number of moles formula is expressed as.

2. Given.

3. Number of moles formula is.

4. Number of moles = Mass of substance / Mass of one mole.

5. Number of moles = 95 / 86.94.

6 0
3 years ago
Other questions:
  • Using the particle-in-the-box model for the hydrogen atom and treating the atom as an electron in a one-dimensional box of lengt
    14·1 answer
  • How many grams of mgo are produced during an enthalpy change of -231 kj ?
    15·1 answer
  • A solution is prepared by mixing 2.88 mol of acetone with 1.45 mol of cyclohexane at 30°C. 2nd attempt Calculate the χacetone an
    9·1 answer
  • How many water molecules are need to break down an oligosaccharide that contains 10 glucose units?
    13·1 answer
  • What’s the density of a fluid if a 5.00 ml of urine sample from a patient suffering from symptoms resembling those of diabetes m
    14·1 answer
  • I'm completely lost. Can anyone help?
    6·1 answer
  • An unknown weak acid with a concentration of 0.530 M has a pH of 5.600. What is the Ka of the weak acid
    13·1 answer
  • Arturo says that some plastics are made by chemically joining the same molecule to itself. Ida says that some plastics are made
    9·2 answers
  • How many atoms of Neon are in 65.0 L of Neon gas?
    8·2 answers
  • 3. What is the total pressure of a mixture of nitrogen and hydrogen, in atm, if the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!