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
Svetach [21]
3 years ago
6

How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms?

Chemistry
1 answer:
Ainat [17]3 years ago
3 0
<span>1mole of Cl atoms contain the Avogadro's number 6x10 exp 23(10 to the power of 23)
there for xmoles of Cl atoms is contained in 1.72x1022atoms
xmoles =1.72x1022 divided by 6x10exp 23
2.93 exp -23moles(2.93 x10 to the power of -23)



Hope It helped Let me know if did!!!!
</span>
You might be interested in
3
Murrr4er [49]

Answer:

Look at the properties of Oxygen and Silicon - the two most abundant elements in the Earth's crust - by clicking on their symbols on the Periodic Table.

Explanation:

7 0
3 years ago
Read 2 more answers
What volume of air is needed to burn completely 100cm of propane?
Evgesh-ka [11]

Answer:

See below

Explanation:

propane mole weight = 44 gm / mole

100 gm / 44 gm / mole = 2.27 moles

From the equation, 5 times as many moles of OXYGEN (O2)are required

   = 11.36 moles of oxygen

           at <u>STP</u> this is 254.55  liters of O2 (because 22.4 L = one mole) and

Using oxygen as 21 percent of air means that

      .21 x = 254.55 =       x = <u>1212.12 liters of air required </u>

5 0
2 years ago
1. What is the first element on the periodic table?
Elena L [17]
Hydrogen as it has only 1 proton and therefore only an atomic mass of 1...
7 0
3 years ago
Read 2 more answers
Which metal atoms can form ionic bonds by losing electrons from both the outermost and next to outermost principal energy levels
RoseWind [281]

Full question options;

(Fe, Pb, Mg, or Ca)

Answer:

Iron - Fe

Explanation:

We understand tht metals pretty much form bonds by losing their valence (outermost electrons). But this question specifically asks for metals that lose beyond their outermost electrons; next to outermost principal energy levels.

Pb, Mg, and Ca only lose their outermost electrons to form the following ions;

Pb2+, Mg2+, and Ca2+.

This is because their ions have achieved a stable octet configuration - the dreamland of atoms where they are satisfied and don't need to go into reactions again.

Iron on the other hand has the following electronic configurations;

Fe:  [Ar]4s2 3d6

Fe2+:  [Ar]4s0 3d6

Fe3+:  [Ar]4s0 3d5

This means ion can lose both the ooutermost electrons (4s) and next to outermost principal energy levels (3d). So correct option is Iron.

5 0
3 years ago
HALLP ME STUCKKKKK
likoan [24]

Answer:

The average height of the sunflower sprouts at the end of week 3 is  12.0

cm.

The average height of the birch sprouts at the end of week 3 is  7.2

cm.

Explanation:

they showed it on edgu

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which element (A, B, or C) is most likely a metalloid
    5·2 answers
  • The average kinetic energy of water molecules is greatest in which of these samples?(1) 10 g of water at 35°C(2) 10 g of water a
    14·2 answers
  • The ir spectrum of benzilic acid is shown below. for each peak indicated by the blue boxes, select the bond represented by the f
    8·1 answer
  • If a student wanted to find a diagram of the human reproductive system in his/her science textbook, which part of the book shoul
    12·2 answers
  • An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation
    6·2 answers
  • If you use 19 mL of 0.100 M KMnO4, how many moles have you used? The answer has to be in four decimal places (do not forget the
    14·1 answer
  • Whats 9x2 im new to madh
    12·1 answer
  • This is another word for microorganism.
    13·2 answers
  • 5. Organisms that make their own energy storage molecules are called producers. What process do
    15·1 answer
  • 50 points in total i believe!<br> Why does chocolate melt when it gets warm?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!