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
allochka39001 [22]
4 years ago
8

Q23 Stoichiometry

Chemistry
1 answer:
Deffense [45]4 years ago
6 0

Answer:

6.0 x 10^-1 g Fe

Explanation:

I might be in the wrong but hear me out:

Convert 0.85 g to mols of Fe2O3.

0.85 g x 1 mol/159.69=0.0053 mols Fe2O3.

Get moles of Fe (iron metal).

0.0053 mols Fe2O3 x 2 mol Fe/ 1 mol Fe2O3

= 1.0 x 10^-2 mols Fe

Convert moles to grams of Fe.

1.0 x 10^-2 mols of Fe x 55.85 grams Fe/ 1 mol Fe

= 6.0 x 10^-1

There should be only one sig fig. Hoped this helped.

You might be interested in
What material do we get from trees that is burnt as a fuel and releases carbon dioxide into the
HACTEHA [7]

Answer:

not quite sure what you meant by the question but I think the answer you're looking for is biomass? not sure though

3 0
3 years ago
Explain why 1 mole of diethyl ether requires less heat to
gizmo_the_mogwai [7]

The quantity of heat required to vapourize 1 mole of a substance depends on the kind of intermolecular forces between the molecules of the substance. Diethyl ether molecules are held together by weak dispersion forces compared to the stronger hydrogen bonding in ethanol. Therefore,  1 mole of diethyl ether requires less heat to  vapourize than is required to vapourize 1 mole of  ethanol.

Intermolecular forces hold the molecules a substance together in a given state of matter. The properties of a substance such as boiling point, melting point etc are dependent on the nature of intermolecular forces holding the molecules of the substance.

Diethyl ether molecules are held together by weak dispersion forces while molecules of ethanol are held together by hydrogen bonds.

Since hydrogen bonds are much stronger than dispersion forces, a greater quantity of heat is required to break the intermolecular hydrogen bonds in ethanol in order to vapourize them than is required to vapourize diethyl ether.

Therefore, owing to stronger intermolecular forces between molecules of ethanol, less heat is required to vapourize than is required to vapourize 1 mole of  ethanol.

Learn more: brainly.com/question/9328418

6 0
3 years ago
What is the main difference between electron configuration and orbital notation?
8_murik_8 [283]

Answer:

Orbital Notation is more specific on where exactly the electron is placed.

Explanation:

When writing an electron configuration for an atom, rather than writing out the occupation of each and every orbital specifically, you instead lump all the core electrons together and designate it with a symbol of the corresponding noble gas on the Periodic Table.

the arrangement of electrons in the orbitals of an atom or molecule

While Orbital Notation is a visual transformation of the electron configuration. It shows you where each specific electron is placed and what its "spin" is.

Glad I could help!

6 0
3 years ago
PLEASE HELP ASAP TAKING A TEST!
pav-90 [236]

Answer:

As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.

Explanation:

6 0
3 years ago
Which set of coefficients will correctly balance the following skeleton equation?
slamgirl [31]

Answer:

2Fe + 3Cl2 → 2FeCl3

Explanation:

5 0
3 years ago
Other questions:
  • What two chemical elements make up the majority of our sun
    13·2 answers
  • Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oil. Which method is she most
    7·2 answers
  • In a chemical reaction, substance R reacts with compound XY to produce 47.0 g of compound RX. If the theoretical yield of RX is
    15·2 answers
  • When sodium and oxygen react to form an ionic compound, the mass of the compound ____ the sum of the masses of the individual el
    6·2 answers
  • When 40.0 mL of 0.200 M HCl at 21.5°C is added to 40.0 mL of 0.200 M NaOH also at 21.5°C in a coffee-cup calorimeter, the temper
    10·1 answer
  • Predict the products of the following reactions (assume complete reaction). In your submission include the overall balanced equa
    13·1 answer
  • PLS HELPPPP NOWWWW!!!!
    11·1 answer
  • Calculate the energy needed to heat 10.5 g ice at -20.0 °C to liquid water at 75.0 °C. The heat of vaporization of water = 2257
    12·1 answer
  • HELP PLEASE!
    5·2 answers
  • Cathode-electrolyte interphase in lithium batteries revealed by cryogenic electron microscopy. matte
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!