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
iris [78.8K]
3 years ago
10

In a particular reaction, 53.8 g of liquid silicon tetrachloride is added to 65.0 g of solid magnesium to produce solid magnesiu

m chloride and solid silicon. What is the excess reagent for the forward reaction?
Chemistry
1 answer:
kotykmax [81]3 years ago
7 0

Answer: Mg is the excess reactant for the forward reaction.

Explanation: It is a stoichiometry problem and solved with the help of given grams and using balanced equation. Grams of both the reactants are converted to moles and divided by their coefficients. The excess reactant is the one for which we get the highest number on doing above steps.

The balanced equation is:

SiCl_4(l)+2Mg(s)\rightarrow 2MgCl_2(s)+Si(s)

Molar mass of silicon tetra chloride is 169.9 gram per mol and the molar mass of Mg is 24.3 gram per mol.

53.8gSiCl_4(\frac{1mol}{169.9g})

= 0.317molSiCl_4

65.0gMg(\frac{1mol}{24.3g})

= 2.67 mol Mg

From balanced equation, the coefficient of silicon tetra chloride is 1 and that of Mg is 2. So, we will divide the moles of silicon tetra chloride by 1 and that of Mg by 2 and see which one gives highest number.

For silicon tetra chloride, \frac{0.317}{1}  = 0.317

and for Mg, \frac{2.67}{2}  = 1.34

The highest number is for Mg and so the excess reactant for the forward reaction is Mg.

You might be interested in
Which method is used to separate the following mixture (a) water + kerosene​
Ad libitum [116K]

Answer:

The separation of kerosene, oil, and water are immiscible liquids, so they can be separated funnel.

8 0
3 years ago
If the experiment were repeated using a cuvettes with a path length of 2.0 cm, how would that affect the absorbance values for t
inessss [21]

Answer:

..............................

5 0
3 years ago
HELP ASAP PLEASE!!!! 15 PTS!!
Bond [772]
ADD THEM all, and then divide by four. Thats what I would do! 
5 0
3 years ago
Read 2 more answers
Electrons involved in bonding between atoms are____.
mariarad [96]

Answer:

valence electrons

8 0
3 years ago
My test is tomorrow and I'm confused about how to solve these. pls halp
Stels [109]

Answer:

Explanation:

  1. <em><u>I</u></em><em><u> </u></em><em><u>don't</u></em><em><u> </u></em><em><u>know</u></em><em><u> </u></em>
  2. <em><u>BCAZ</u></em><em><u> </u></em><em><u>I</u></em><em><u> </u></em><em><u>don't</u></em><em><u> </u></em><em><u>know</u></em>
  3. <em><u>And</u></em><em><u> </u></em><em><u>I</u></em><em><u> </u></em><em><u>don't</u></em><em><u> </u></em><em><u>know</u></em>
  4. <em><u /></em><em><u /></em><em><u /></em><em><u /></em>
5 0
2 years ago
Other questions:
  • What is the specific heat capacity of the metal? use sig figs here. Make sure to choose the correct initial temperature and sole
    6·1 answer
  • Calcium is a nontoxic metal that is used in supplements to maintain strong bones. Under high pressure conditions, over about 320
    10·1 answer
  • The activity of a radioactive substance depends on ?​
    12·1 answer
  • How can you tell a Cu(No3)2 solution from a Ni(NO3)2 solution?
    10·1 answer
  • What would happen to a population if there were a change in the environment where the population lived
    10·1 answer
  • What, if anything is wrong with the model of the solar system shown below ? Give me a big or small answer
    6·1 answer
  • For a beryllium-gold voltaic cell containing Be2+(aq) and Au3+(aq) solutions, do the following. (a) Identify the cathode. (Inclu
    13·1 answer
  • Why must oxidation be accompanied by a reduction?
    14·2 answers
  • 5
    9·1 answer
  • The ability of a substance to combine chemically with another substance.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!