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
AlekseyPX
3 years ago
8

Chromium(III) oxide reacts with hydrogen sulphide gas to form chromium(III) sulphide and water. How many grams of hydrogen sulph

ide are required to produce 324.8 g of chromium(III) sulphide?
Chemistry
1 answer:
ahrayia [7]3 years ago
7 0

Answer:

165.726 g.

Explanation:

  • For the balanced equation:

<em>Cr₂O₃ + 3H₂S → Cr₂S₃ + 3H₂O,</em>

It is clear that 1 mol of Cr₂O₃ and 3 mol of H₂S to produce 1 mol of Cr₂S₃ and 3 mol of H₂O.

  • Firstly, we need to calculate the no. of moles of 324.8 g of chromium(III) sulphide:

no. of moles of Cr₂S₃ = mass/molar mass = (324.8 g)/(200.19 g/mol) = 1.62 mol.

  • Now, we can find the "no. of grams" of H₂S are needed:

<u><em>Using cross multiplication:</em></u>

3 mol of H₂S produces → 1 mol of Cr₂S₃, from stichiometry.

??? mol of H₂S produces → 1.62 mol of Cr₂S₃.

∴ The no. of moles of H₂S are needed = (3 mol)(1.62 mol)/(1 mol) = 4.86 mol.

∴ The "no. of grams" of H₂S are needed = (no. of moles of H₂S)(molar mass of H₂S) = (4.86 mol)(34.1 g/mol) = 165.726 g.

You might be interested in
Plz tell me if I'm correct I am terrible at science if I'm not correct me plz correct me!!! I promise I'll give brainliest!!! Oh
adell [148]

Answer:

You are mostly correcet but im pretty sure that the nonmetals are brittle because they can break easily

Explanation:

5 0
3 years ago
PLS HELP IT IS DUE TODAY IN 30 MINS PLS ANSWER 14 POINTS
Natali5045456 [20]

Answer:

gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Explanation:

hope that helps! (:

6 0
3 years ago
Read 2 more answers
I need help with Chemistry: Mole Conversion<br> It must be answered in complete detail
Anni [7]

Answer:

As Per Given Information

Number of moles SO₂ ( Sulphur dioxide ) is 0.30

We 've been asked to find the number of atoms in given moles of Sulphur dioxide .

Value of Avogadro Number is 6.022 × 10²³ mol⁻¹

For finding the number of atoms we will use formale

\underline{\boxed{\textbf{\textsf{ Number \: of \: atoms \:  = Given \: moles \:  . Avogadro \: number}}}}

Putting the given value we obtain

\sf \twoheadrightarrow \: Number \: of \: atoms \:  = 0.30 \times 6.022 \times  {10}^{  23}    \\  \\ \sf \twoheadrightarrow \: Number \: of \: atoms \:  = \: 1.8066 \times  {10}^{ 23} atoms

So, the number of atoms in sulphur dioxide is 1.8066 × 10²³

8 0
1 year ago
Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution
tatiyna

Answer : Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

Explanation :

For non-electrolyte solution, the formula used for lowering in freezing point is,

\Delta T_f=k_f\times m

where,

\Delta T_f = lowering in freezing point

k_f = molal depression constant

m = molality

As per question, the molality is same for all the non-electrolyte solution. So, the lowering in freezing point is depend on the k_f only.

That means the higher the value of k_f, the higher will be the freezing point lowering.

From the given non-electrolyte solutions, the value of k_f of carbon tetrachloride is higher than the other solutions.

Therefore, Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

4 0
3 years ago
How many moles of carbon are in 7.00 x 1023 atoms of carbon?
Andru [333]

Answer:

<h2>1.16 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{7 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{7}{6.02}  \\  = 1.162790....

We have the final answer as

<h3>1.16 moles</h3>

Hope this helps you

8 0
3 years ago
Other questions:
  • To make a table of the elements, dimitri Mendeleev sorted the elements according to their?
    8·2 answers
  • Calculate the theoretical value for the number of moles of CO2 that should have been produced in each balloon assuming that 1.45
    10·1 answer
  • 30 POINTS!!!!Now calculate the specific gravity of the rose quartz. The procedure is as follows: Remember, the density of water
    6·1 answer
  • How many moles of KCl would be dissolved in 4 L of water to make a 2 M solution?
    5·1 answer
  • The chemistry of nitrogen oxides is very versatile. Given the following reactions and their standard enthalpy changes, (1) NO(g)
    5·1 answer
  • What does this diagram represent?
    11·1 answer
  • How would you be able to use the spectrum of each gas to establish its identity
    13·1 answer
  • Which of the following is an example of a solution?
    8·1 answer
  • What is the acceleration of the ball if it has a mass of 1.5 kg and had a force of 45 N?
    8·1 answer
  • Which phrase describes faults?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!