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
Anettt [7]
3 years ago
7

I NEED HELP PLEASE, THANKS! :)

Chemistry
1 answer:
krok68 [10]3 years ago
5 0

Answer:

\large \boxed{\text{2.20 g Pb}}

Explanation:

They gave us the masses of two reactants and asked us to determine the mass of the product.

This looks like a limiting reactant problem.

1. Assemble the information

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:       239.27   32.00        207.2

            2PbS   +   3O₂   ⟶  2Pb   +   2SO₃

m/g:      2.54        1.88

2. Calculate the moles of each reactant

\text{Moles of PbS} = \text{2.54 g PbS } \times \dfrac{\text{1 mol PbS}}{\text{239.27 g PbS}} = \text{0.010 62 mol PbS}\\\\\text{Moles of O}_{2} = \text{1.88 g O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{32.00 g O}_{2}} = \text{0.058 75 mol O}_{2}

3. Calculate the moles of Pb from each reactant

\textbf{From PbS:}\\\text{Moles of Pb} =  \text{0.010 62 mol PbS} \times \dfrac{\text{2 mol Pb}}{\text{2 mol PbS}} = \text{0.010 62 mol Pb}\\\\\textbf{From O}_{2}:\\\text{Moles of Pb} =\text{0.058 75 mol O}_{2} \times \dfrac{\text{2 mol Pb}}{\text{3 mol O}_{2}}= \text{0.039 17 mol  Pb}\\\\\text{PbS is the $\textbf{limiting reactant}$ because it gives fewer moles of Pb}

4. Calculate the mass of Pb

\text{ Mass of Pb} = \text{0.010 62 mol Pb} \times \dfrac{\text{207.2 g Pb}}{\text{1 mol Pb}} = \textbf{2.20 g Pb}\\\\\text{The reaction produces $\large \boxed{\textbf{2.20 g Pb}}$}

You might be interested in
Several students want to conduct a descriptive investigation on igneous rocks. Which process is most likely to be part of their
iris [78.8K]

Answer:

A

Explanation:

They will collect samples from different sites and write their observations

8 0
3 years ago
PLEASE HELPPP!!!!!!!!!!!!!!!!!!!!
riadik2000 [5.3K]
Similarities. very useful
differences. coal is a pullutant. while womd is not. i guess
6 0
3 years ago
Read 2 more answers
5. What are Opioids?
Alex_Xolod [135]
The answer to your question is the first one!
6 0
3 years ago
Find the mistake<br> Cu(NO3)2(s) + CuO(s) → 2NO(g) + O3(g)
kvv77 [185]

there are 2 copper atoms on the left side of the arrow, but none on the other side. there are also 7 oxygen atoms on the left hand side, but only 5 on the right hand side of the arrow.
3 0
3 years ago
How many particles are in 697.008 grams of Potassium Sulfate?
g100num [7]

Answer:

174.2592

Explanation:

Trust me.

8 0
3 years ago
Other questions:
  • How can you increase the boiling point of water?
    8·1 answer
  • Which of the following reactions results in a decrease in entropy? 2SO2 (g) + O2 (g) yields 2SO3 (g) 2NH3 (g) yields N2 (g) + 3H
    6·2 answers
  • When talking on a phone, the voice is transformed into electrical energy. This energy passes over wires or is transmitted throug
    10·2 answers
  • Element z reacts with bromine to form an ionic compound zbr2. A) state with reasons i) the physical properties of zbr2 at room t
    10·1 answer
  • The label on a bottle reads 10 mg of furosemide per mL. How many mg of furosemide do you have in a 250 mL bottle?
    14·1 answer
  • Question 4 of 5
    15·2 answers
  • How do secretions of apocrine glands differ from those of the eccrine sweat glands
    8·1 answer
  • Which scientist is credited with developing the fist scientific atomic theory
    13·1 answer
  • You find out
    14·1 answer
  • Solve 21 and 22 please
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!