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
kirill [66]
3 years ago
12

What mass of iron is needed to react with sulfur in order to produce 96 grams of

Chemistry
2 answers:
Setler79 [48]3 years ago
8 0

The balanced equation for the reaction is as follows;

2Fe + 3S ---> Fe₂S₃

molar ratio of Fe to Fe₂S₃ is 2:1

mass of Fe₂S₃ to be produced is - 96 g

therefore number of moles of Fe₂S₃ to be produced is - 96 g / 208 g/mol

number of Fe₂S₃ moles = 0.46 mol

according to the molar ratio

when 2 mol of Fe reacts with 3 mol of sulfur then 1 mol of Fe₂S₃ is produced

that for 1 mol of Fe₂S₃ to be produced - 2 mol of Fe should react

therefore for 0.46 mol of Fe₂S₃ to be produced - 2 x 0.46  = 0.92 mol of Fe is required

mass of Fe required - 0.92 mol x 56 g/mol  = 51.5 g

mass of Fe required is - 51.5 g

Sladkaya [172]3 years ago
4 0

Answer:

103.2 g Fe

Explanation:

You might be interested in
What is the approximate total number of atoms in 1.0 mole of lithium?
chubhunter [2.5K]

Answer:

6.0 x 10 to the power of 23

6 0
3 years ago
Give a theoretical reason why lithium and oxygen combine in the ratio 2:1
V125BC [204]
Lithium is in the first column of the periodic table and thus can only form one bond with another atom (its ion is Li+)

Oxygen can form two bonds (as in the dioxygen O2).

Hence if you conbine Li and O it has to be Li2O.
4 0
3 years ago
6) (a) Calculate the absorbance of the solution if its concentration is 0.0278 M and its molar extinction coefficient is 35.9 L/
Anvisha [2.4K]

Answer:

6) (a) 0.499; (b) 31.7 %

7) 0.15

Explanation:

6) (a) Absorbance

Beer's Law is

A = \epsilon cl\\A = \text{35.9 L&\cdot$mol$^{-1}$cm$^{-1}$} $\times$ 0.0278 mol$\cdot$L$^{-1} \times $ 0.5 cm = \mathbf{0.499}

(b) Percent transmission

A = \log {\left (\dfrac{1}{T}}\right)}\\\\\%T = 100T\\\\T = \dfrac{\%T}{100}\\\\\dfrac{1}{T} = \dfrac{100 }{\%T}\\\\A = \log \left(\dfrac{100 }{\%T} \right ) = 2 - \log \%T\\\\0.499 = 2 - \log \%T\\\\\log \%T = 2 - 0.499 = 1.501\\\\\%T = 10^{1.501} = \mathbf{31.7}

7) Absorbance

A = \log \left (\dfrac{I_{0}}{I} \right ) = \log \left (\dfrac{I_{0}}{0.70I_{0}} \right ) = \log \left (\dfrac{1}{0.70} \right ) = -\log(0.70) = \mathbf{0.15}}

8 0
3 years ago
In ionic bonding an arrow is often drawn on the diagram. What does
alexandr1967 [171]

In ionic bonding, an arrow is often drawn on the diagram to show the direction the electrons move to form the ions.

4 0
3 years ago
Which is most likely to happen during a precipitation reaction?
Salsk061 [2.6K]

Answer:

I think its B

Explanation:

Precipitation reactions leave a solid behind. The solid is called a precipitate.

3 0
3 years ago
Other questions:
  • A liter is the same as a _____.
    11·2 answers
  • PLZ HELP CHEM!!!!!!!!!!!!!!
    12·2 answers
  • A scientist is studying a compound that includes nitrogen, carbon, oxygen, and hydrogen. Is the scientist studying an organic mo
    6·2 answers
  • What the other name of atoms?
    7·1 answer
  • Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
    9·1 answer
  • An electrically neutral atom of oxygen has eight electrons. What other facts do you know for sure about this atom? 1.) there are
    9·2 answers
  • 5. Which of the following materials
    10·1 answer
  • Cual es el principal producto en la fotosíntesis para las plantas?¿y para los humanos?​
    5·1 answer
  • Please Help! 40 Points! PLEASE DON'T PUT INCORRECT ANSWERS TO USE MY POINTS!
    12·2 answers
  • Is it possible for the entropy of both a closed system and its surroundings to decrease during the process?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!