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
vekshin1
3 years ago
8

Calculate the number of grams of CO that can react with 0.400 kg of Fe2O3.

Chemistry
2 answers:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

mass of CO = 210.42 g

mass in three significant figures = 210. g

Explanation:

Given data:

mass of Fe2O3 = 0.400 Kg

mass of CO= ?

Solution:

chemical equation:

Fe2O3 + 3CO → 2Fe + 3CO2

Now we will calculate the molar mass of  Fe2O3 and CO.

Molar mass of  Fe2O3 = (55.845 × 2) + (16 × 3) = 159.69 g/mol

Molar mass of CO = 12+ 16 = 28 g/mol

now we will convert the kg of Fe2O3 in g.

mass of Fe2O3 = 0.400 kg × 1000 = 400 g

number of moles of Fe2O3  = 400 g/ 159.69 g/mol = 2.505 mol

mass of CO = moles of Fe2O3 × 3( molar mass of CO)

mass of CO = 2.505 mol × 84 g/mol

mass of CO = 210.42 g

mass in three significant figures = 210. g

Katena32 [7]3 years ago
4 0

<u>Answer:</u>

<em>The number of grams of CO that can react with 0.400 kg of Fe_2 O_3 is 210 g.</em>

<em></em>

<u>Explanation:</u>

The balanced chemical equation is

$F e_{2} \boldsymbol{O}_{3}(s)+3 \boldsymbol{C} \boldsymbol{O}(\boldsymbol{g})>2 \boldsymbol{F e}(\boldsymbol{s})+3 \boldsymbol{C} \boldsymbol{O}_{2}(\boldsymbol{g})$

$0.400 \mathrm{kg} \mathrm{Fe}_{2} \mathrm{O}_{3} \times \frac{1000 \mathrm{g} \mathrm{Fe}_{2} \mathrm{O}_{3}}{1 \mathrm{Kg} \mathrm{Fe}_{2} \mathrm{O}_{3}} \times \frac{1 \mathrm{mol} \mathrm{Fe}_{2} \mathrm{O}_{3}}{159.7 \mathrm{gFe}_{2} \mathrm{o}_{3}} \times \frac{3 \mathrm{molCO}}{1 \mathrm{molFe}_{2} \mathrm{o}_{3}} \times \frac{28 \mathrm{g} \mathrm{CO}}{1 \mathrm{mol} \mathrm{CO}}$

=210g CO is the Answer

The number of grams of CO that can react with 0.400 kg of Fe_2 O_3 is 210 g.

You might be interested in
What is the molar mass off a substance?
ruslelena [56]
It is the mass of one mole of the substance.
4 0
3 years ago
How does the law of conservation of energy apply to the changes in potential and kinetic energy of a pencil as it falls to the f
antiseptic1488 [7]

The changes in the energy law of conservation of energy is Potential energy is converted to kinetic energy. Kinetic energy is converted into potential energy.

<h3>What is the law of conservation of energy?</h3>

Law of conservation of energy says that energy can neither be created nor destroyed, it just transformed from one form to another.

The energies are kinetic, potential, mechanical, gravitational, electrical, etc.

Thus, the changes in the energy law of conservation of energy is Potential energy is converted to kinetic energy. Kinetic energy is converted into potential energy.

Learn more about law of conservation of energy

brainly.com/question/20971995

#SPJ4

7 0
2 years ago
The acid-dissociation constant of hydrocyanic acid (hcn) at 25.0 °c is 4.9 ⋅ 10−10. what is the ph of an aqueous solution of 0.0
vodomira [7]
According to the reaction equation:

and by using ICE table:

              CN-  + H2O ↔ HCN  + OH- 

initial  0.08                        0          0

change -X                        +X          +X

Equ    (0.08-X)                    X            X

so from the equilibrium equation, we can get Ka expression

when Ka = [HCN] [OH-]/[CN-]

when Ka = Kw/Kb

               = (1 x 10^-14) / (4.9 x 10^-10)

               = 2 x 10^-5

So, by substitution:

2 x 10^-5 = X^2 / (0.08 - X)

X= 0.0013

∴ [OH] = X = 0.0013 

∴ POH = -㏒[OH]

            = -㏒0.0013

            = 2.886 

∴ PH = 14 - POH

         = 14 - 2.886 = 11.11
5 0
3 years ago
Wind turbines are becoming an increasingly popular method of generating a community’s electricity. In wind turbines, wind is use
Tema [17]
The will not affect the wind. When it is windy the wind turns a turbine. Once the wind has gone through the turbine it is just normal wind, none of the wind is lost when this happened
4 0
3 years ago
Read 2 more answers
What is your dream job or ideal lifestyle?
blondinia [14]
My dream job is to create my own business and become my own boss
7 0
3 years ago
Other questions:
  • Chemicals called ______ are those that can combine with h+ when hydrogen ions are in excess, and release h+ when hydrogen ion le
    6·2 answers
  • In a spontaneous reaction -
    7·1 answer
  • What is the molarity of a solution that contains 14 moles of solute and 2 liters of solution?
    13·1 answer
  • Can u help?? It's science and I'm in 6th grade
    15·1 answer
  • Predict the shift in equilibrium position that will occur for each of the following reactions when the volume of the reaction co
    15·1 answer
  • One isotope of carbon (C) has exactly the same mass number and atomic mass since it was used as the definition of the atomic mas
    6·1 answer
  • Loss of a beta particle
    10·1 answer
  • which of the basic ideas of dalton's Atomic Theory is an extension of what the Greeks believed about atoms?
    5·1 answer
  • Type the max number of electrons that can be present in each shell or sub below
    9·2 answers
  • if 3.95 mol of an ideal gas has a pressure of 2.33 atm and a volume of 60.87 l, what is the temperature of the sample in degrees
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!