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
MA_775_DIABLO [31]
3 years ago
8

Determine the number of moles in 5.25x1024 formula units if lead (IV) oxide.

Chemistry
1 answer:
a_sh-v [17]3 years ago
6 0

Answer:

8.72 mol PbO₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

<u>Step 1: Define</u>

5.25 × 10²⁴ formula units PbO₂

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

<u />5.25 \cdot 10^{24} \ formula \ units \ PbO_2(\frac{1 \ mol \ PbO_2}{6.022 \cdot 10^{23} \ formula \ units \ PbO_2} ) = 8.71803 mol PbO₂

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

8.71803 mol PbO₂ ≈ 8.72 mol PbO₂

You might be interested in
PLEASE HELP!! I'LL GIVE BRAINLIEST!! ( I put the other pic because i didn’t know if that was needed for those two questions)
-Dominant- [34]

Answer:

1. The skater's kinetic energy decreases as he moves up the ramp. As the skater moves down the ramp, his potential energy decreases

2.Kinetic Energy is the energy of motion. As the skateboard rolls down the ramp it loses potential energy and gains kinetic energy. The total energy of the skateboarder remains constant.

8 0
3 years ago
Read 2 more answers
Muscle tissue is made up of cells that contract and release to produce movement. Which process provides the energy that the cell
Scrat [10]
I think you mean miosis because mitosis is cell reproduction, photosynthesis is to do with light, respiration is breathing and meiosis is division of cells
5 0
3 years ago
Read 2 more answers
4. Mineral used as fuel.
NemiM [27]

Answer:

The mineral fuels—coal, petroleum, and natural gas—may be described as a special type of economic deposit. Geochemically they represent the concentration of carbon and hydrogen by processes that were initially biological in nature.

Explanation:

thank me later

3 0
3 years ago
Read 2 more answers
How many atoms are in .47 moles of argon
lesantik [10]

Answer:

\large \boxed {2.8 \times 10^{23}\text{ atoms Ar}}

Explanation:

\text{Atoms of Ar} = \text{0.47 mol Ar} \times \dfrac{ 6.022  \times 10^{23}\text{ atoms Ar}}{\text{1 mol Ar}}\\\\= \large \boxed {\mathbf{2.8 \times 10^{23}}\textbf{ atoms Ar}}

3 0
3 years ago
What is the charge on an electron?
Llana [10]

Answer:

The answer is negative .

3 0
3 years ago
Other questions:
  • 2. Se combinan 40 g de SO2 y 25 g de O2 determine el porcentaje en masa del exceso con respecto a su masa inicial. P.A. (S = 32;
    14·1 answer
  • A sample of sugar (C12H22O11) contains 1.505 × 1023 molecules of sugar. How many moles of sugar are present in the sample?
    14·1 answer
  • Which property provides the best evidence that the unknown substance is a solid
    5·1 answer
  • Help please? :)
    10·2 answers
  • Which element is a semiconductor
    15·2 answers
  • 9. The role of an organism in an ecosystemis called alan
    14·2 answers
  • Explain, in your own words, what volumic mass is?
    6·1 answer
  • A combination of salt and sugar grains is best classified as a mixture because...
    9·1 answer
  • PLEASE HELPPPPPP<br> Which of the following statements is correct for the equation shown here?
    10·1 answer
  • What is chemical reaction ??​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!