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
Natasha_Volkova [10]
2 years ago
7

HELP FAST Plz!!!!!!

Chemistry
1 answer:
loris [4]2 years ago
4 0

Answer:c

Explanation:Gii

You might be interested in
Aluminum reacts with sulfur gas to produce aluminum sulfide. a) What is the limiting reactant? What is the excess reagent? b) Ho
Sophie [7]

Answer:

a) Limiting: sulfur. Excess: aluminium.

b) 1.56g Al₂S₃.

c) 0.72g Al

Explanation:

Hello,

In this case, the initial mass of both aluminium and sulfur are missing, therefore, one could assume they are 1.00 g for each one. Thus, by considering the undergoing chemical reaction turns out:

2Al(s)+3S_2(g)\rightarrow 2Al_2S_3(s)\\

a) Thus, considering the assumed mass (which could be changed based on the one you are given), the limiting reagent is identified as shown below:

n_S^{available}=1.00gS_2*\frac{1molS_2}{64gS_2} =0.0156molS_2\\n_S^{consumed\ by \ Al}=1.00gAl*\frac{1molAl}{27gAl}*\frac{3molS_2}{2molAl}=0.0556molS_2

Thereby, since there 1.00g of aluminium will consume 0.0554 mol of sulfur but there are just 0.0156 mol available, the limiting reagent is sulfur and the excess reagent is aluminium.

b) By stoichiometry, the produced grams of aluminium sulfide are:

m_{Al_2S_3}=0.0156molS_2*\frac{2molAl_2S_3}{3molS_2} *\frac{150gAl_2S_3}{1molAl_2S_3} =1.56gAl_2S_3

c) The leftover is computed as follows:

m_{Al}^{excess}=(0.0556-0.0156)molS_2*\frac{2molAl}{3molS_2}*\frac{27gAl}{1molAl} =0.72 gAl\\

NOTE: Remember I assumed the quantities, they could change based on those you are given, so the results might be different, but the procedure is quite the same.

Best regards.

7 0
3 years ago
Why is it important to add coefficients and not change the subscripts when balancing a chemical equation?
Artemon [7]
Because of making the equestion to be more stable and form the best compound according to it's reactant.
5 0
3 years ago
Which Group 16 element combines with hydrogen to form a compound that has the strongest hydrogen bonding between its molecules?
Natalka [10]
I am gonna go with 3 Sulfur
4 0
3 years ago
A car drives with constant speed of 112km/h. How long will it take to travel to distance of 56 kilometers?
SSSSS [86.1K]

112 km is travelled by car in 60 minutes

1 km is travelled by car in 60/112 minutes

56 km is travelled by car in 60/112*56 = 30 minutes  = 0.5 hours

Explanation:

3 0
3 years ago
Which of these pairs of elements is most likely to be part of a polyatomic ion?
Mrrafil [7]
S and O would be on a polyatomic ion as I know of
3 0
3 years ago
Read 2 more answers
Other questions:
  • Post your responses to the following:
    9·1 answer
  • Consider the molecules: scl2, f2, cs2, cf4, and brcl. select the choice where the bonds of the molecules are arranged in order o
    12·1 answer
  • Write the chemical symbol for an element in Period 6 and Group 2A
    6·1 answer
  • Consider a hexagonal close-packed unit cell as shown here.
    9·1 answer
  • An aqueous solution of calcium hydroxide is standardized by titration with a 0.183 M solution of hydrochloric acid. If 16.6 mL o
    8·2 answers
  • What’s the partial pressure of carbon dioxide in a container that holds 5 moles of carbon dioxide, 3 moles of nitrogen, and 1 mo
    10·1 answer
  • 38 POINTS - PEER COUNSELING 2 QUESTION
    6·2 answers
  • Which of the following is true about fossils?
    9·2 answers
  • How many atoms of Bi are there in a 41.8 g sample?
    15·1 answer
  • The measure of the speed of the moving or<br> vibrating particles is called the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!