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
Dominik [7]
4 years ago
10

How many molecules of carbon monoxide (co) are needed to react with excess iron (iii) oxide (fe2o3) to produce 11.6 g of iron (f

e)?
Chemistry
1 answer:
Troyanec [42]4 years ago
7 0
<span>8.73 grams CO
   The balanced equation for the reaction is
3CO + Fe2O3 ==> 2Fe + 3CO2
   So for every 2 atoms of Fe produced, 3 molecules of CO is needed. So let's start by looking up the atomic weights of the involved elements:
 Atomic weight iron = 55.845
  Atomic weight carbon = 12.0107 
  Atomic weight oxygen = 15.999
   Molar mass CO = 12.0107 + 15.999 = 28.0097 g/mol
 Moles iron = 11.6 g / 55.845 g/mol = 0.20771779 mol
   Moles CO needed = 0.20771779 mol / 2 * 3 = 0.311576685 mol
 Mass CO needed = 0.311576685 mol * 28.0097 g/mol = 8.727169487 g Rounding to 3 significant figures gives 8.73 grams CO</span>
You might be interested in
Successive ionization energy for Cu²+​
kogti [31]

Answer:

Here's what I get  

Explanation:

The ionization energy (I) is the energy required to remove an electron from an atom in the gaseous phase.

You can remove electrons in succession and measure the energies required as I₁, I₂, I₃, etc.

Thus, the removal of two electrons from Cu gives you Cu²⁺.

I found the ionization energies of Cu and used them to create those of Cu²⁺ (see table and graph below).

The electron configuration of Cu²⁺ is

Cu²⁺: 1s² 2s²2p⁶ 3s²3p⁶ 3d⁹

You can remove the nine 3d electrons and then there is a sudden jump from I₉ to I₁₀ as you break into the filled [Ar] configuration.

Similarly, there is big jump from I₁₇ to I₁₈ as you break into the filled [Ne] configuration.

8 0
3 years ago
This answer please :)
Artemon [7]

Answer:

ithink it is c but i dont my ghess

Explanation:

i want to do thos for the points tbh

5 0
3 years ago
Which among the following statements is FALSE? Group of answer choices None of the above A liquid has a definite volume; but it
Vesna [10]

Answer: None of the above statements is false.

Explanation:

In a solid substance, particles are closely held together due to which a solid substance has definite shape and volume. Therefore, solids are also incompressible in nature.

In liquids, the molecules are slightly away from each other due to which they can slide past each other. Hence, liquids do not have a fixed shape but they have a definite volume. Liquids are also incompressible in nature.

In gases, the particles are held by Vander waal forces due to which they move rapidly from one place to another. Hence, gases are highly compressible in nature.

Thus, we can conclude that none of the given statements are false.

4 0
3 years ago
What is a mixture of two insoluble mixtures called​
madreJ [45]

Answer:

Emulsion

Explanation:

Emulsion is a special type of mixture formed by combining two liquids that do not normally mix. An example of emulsion is;

Oil and Water

5 0
3 years ago
The toy car in the picture is propelled forward by A) The weight of the car. B) The force of the car on the air. C) The friction
katovenus [111]

Answer:

the answer is d :)

Explanation:

7 0
4 years ago
Other questions:
  • 1. Two students below described a type of Earth's outermost layer:
    6·2 answers
  • Which following is found in the nucleus of the atom​
    11·1 answer
  • ANSWER ASAP PLEASE The Florida panther is one of the most endangered animals on earth. Where is the air that Florida panthers br
    9·1 answer
  • Which of these is caused by a chemical change?
    8·1 answer
  • What is the charge of an electron?
    11·1 answer
  • How many moles of silicon (Si) atoms are equivalent to 65.8 g Si?
    15·2 answers
  • Photosynthesis transfers electrons from water to carbon dioxide molecules. Why is this electron transfer called an oxidation red
    8·1 answer
  • Which one of the following formulas represents an aldehyde? A. C2H5OH B. CH3COOH C. C6H10O5 D. C2H4O
    5·2 answers
  • Determine the empirical formula of a compound containing 47.37 grams of carbon, 10.59 grams of hydrogen, and 42.04 grams of oxyg
    10·1 answer
  • Sulfur is yellow, solid, nonmetal. what other elements is likely also a nonmetal?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!