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
cluponka [151]
2 years ago
10

How many atoms are present in 2.1 moles of Fe

Chemistry
1 answer:
Lyrx [107]2 years ago
4 0

Answer:

1.3 x 10²⁴ atoms Fe

Explanation:

To convert moles to atoms, you need to multiply your given value by Avogadro's Number. This causes the conversion to occur because Avogadro's Number exists as a ratio. It is the ratio that allows for the cancellation of units during multiplication. This is why atoms should be in the numerator of your conversion. The final answer should have 2 sig figs to reflect the given value.

Avogadro's Number:

1 mole = 6.022 x 10²³ atoms

2.1 moles Fe          6.022 x 10²³ atoms
---------------------  x  -------------------------------  =  1.3 x 10²⁴ atoms Fe
                                        1 mole

You might be interested in
Which element, when combined with Iodine, would most likely form an ionic compound?
uranmaximum [27]

In an ionic compound the atoms are linked via ionic bonds. These are formed by the transfer of electrons from one atom to the other. The atom that loses electrons gains a positive charge whereas the atom that accepts electrons gains a negative. This happens in accordance with the octet rule wherein each atom is surrounded by 8 electrons

In the given example:

The valence electron configuration of Iodine (I) = 5s²5p⁵

It needs only one electron to complete its octet.

In the given options:

K = 4s¹

C = 2s²2p²

Cl = 3s²3p⁵

P = 3s²3p³

Thus K can donate its valence electron to Iodine. As a result K, will gain a stable noble gas configuration of argon while iodine would gain an octet. This would also balance the charges as K⁺I⁻ creating a neutral molecule.

Ans: Potassium (K)

4 0
3 years ago
Students are designing an experiment to test the law of conservation of mass using the following materials: 10 g baking soda, 30
Ivan

it would be 50ml hope th

8 0
2 years ago
Based on the six given solvents, which of the following answers lists ALL of the solvents that are NOT suitable for liquid-liqui
Zina [86]

Answer:

I don't know the answer sorry

6 0
3 years ago
A substance undergoes a change. Which of the following indicates that the change
LekaFEV [45]

Answer:

change of color

Explanation:

when a substance undergoes a change of color it is an indication that it was chemical

5 0
3 years ago
Which of the following bases can be ingested safely?
Nimfa-mama [501]
Lol, hey cece. :) its A. Aluminum hydroxide, but you can just use inspect element. Those pictures are the answers. I already sent them

6 0
3 years ago
Other questions:
  • A graduated cylinder was filled with water to the 25.0 mL mark and weighed. Its mass was 105.5g. An object made of an unknown me
    6·1 answer
  • Which of the following compounds exhibit hydrogen bonding?
    14·1 answer
  • The attraction of like water molecules to each other is called _________.
    15·1 answer
  • FILL IN THE BLANK<br><br> an elements __________ is its row in the periodic table
    14·2 answers
  • What is the ph of a solution with a hydrogen ion h+ concentration of 10-8 m?
    8·1 answer
  • Which statement about the energy of a phase change is true?
    12·2 answers
  • A chemical process involves adding various agents to a vat and then waiting for the agents to react to make a final compound. Th
    6·1 answer
  • How to make 0.01 Molar solution in 30 ml of water
    11·1 answer
  • What do acids react with in limestone to form giant cave systems?
    15·2 answers
  • If a solution has a pH of 2, what is the hydroxide ion concentration?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!