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
NeX [460]
3 years ago
10

Consider the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 3.29 mol of m

agnesium and 3.29 mol of hydrochloric acid are reacted, how many moles of excess reactant are left over?
a. 6.58 mol
b. 3.29 mol
c. 2.47 mol
d. 40.0 mol
Chemistry
1 answer:
gregori [183]3 years ago
7 0

Answer:

1.645 moles of excess reactant that is of magnesium metal are left over.

Explanation:

Moles of magnesium metal = 3.29 mol

Moles of HCl = 3.29 mol

Mg(s)+2HCl(aq)\rightarrow MgCl_2(aq)+H_2(g)

According to recation, 2 moles of HCl reacts with 1 mol of magnesium metal, then 3.29 moles of HCl will react with :

\frac{1}{2}\times 3.29 mol=1.645 mol of magnesium metal

Moles of HCl left = 3.29mol - 3.29 mol = 0

Moles of magnesium metal left = 3.29 mol - 1.645 mol = 1.645 mol

1.645 moles of excess reactant that is of magnesium metal are left over.

You might be interested in
If you have 10.0 grams of citric acid with enough baking soda (nahco3 how many moles of carbon dioxide can you produce?
kap26 [50]
Easy stoichiometry conversion :)

So, for stoichiometry, we always start with our "given". In this case, it would be the 10.0 grams of NaHCO3. This unit always goes over 1.

So, our first step would look like this:

10.0
------
  1

Next, we need to cancel out grams to get to moles. To do this, we will do grams of citric acid on the BOTTOM of the next step, so it cancels out. This unit in grams will be the mass of NaHCO3, which is 84.007. Then, we will do our unit of moles on top. Since this is unknown, it will be 1.

So, our 2nd step would look like this:

1 mole CO2
-----------------
84.007g NaHCO3

When we put it together: our complete stoichiometry problem would look like this:

10.0g NaHCO3     1mol CO2
---------------------- x -------------------------
            1                  84.007g NaHCO3

Now to find our answer, all we need to do is:
Multiply the two top numbers together (which is 10.0)
Multiply the two bottom numbers together (Which is 84.007)

And then....

Divide the top answer by the bottom answer.

10.0/84.007 is 0.119

So, from 10.0 grams of citric acid, we have 0.119 moles of CO2.

Hope I could help!
6 0
3 years ago
Read 2 more answers
Compare and contrast steak and juice​
blsea [12.9K]
Steak is a meat and juice is a liquid
5 0
3 years ago
The measure of how closely a set of measurements are to each other is the best definition for which of the following terms. a er
ahrayia [7]
D. precision. At first glance you can mark out A and B because the answers does not relate to the question. If question had said "what do you call it when the measurement is close to the actual answer" then you would have picked C. So that leaves you D. precision.
6 0
3 years ago
Plz answer this i will mark brainly like and ratr
matrenka [14]

Answer:

answer what ?

Explanation:

4 0
3 years ago
At the end of the last lesson, you learned there was not enough carbon dioxide in the biodome air, which led to a decrease in en
lakkis [162]

There may be too many plants present or too few animals in the biodome hence the decrease in carbon dioxide .

<h3>What is a biodome?</h3>

The term biodome refers to an artificially buit ecosystem. We must recall that an ecosystem is a self sustaining unit in which materials and energy are exchanged.

If there is less carbon dioxide in the biodome then it means that there are too many plants present or too few animals in the biodome.

Learn more about ecosystem: brainly.com/question/1673533

4 0
2 years ago
Other questions:
  • If a satellite or spaceship explodes in outer space, you can see the explosion from a distance but you cannot hear it. Why?
    9·2 answers
  • All matter on earth contains energy
    10·1 answer
  • Balance the following redox equation, identifying the element oxidized and the element reduced. Show all of the work used to sol
    13·1 answer
  • Fission reactions can get out of control without what taking place?Select one of the options below as your answer:A. chain react
    13·2 answers
  • Where can Earth's atmosphere be heated by conduction?
    9·2 answers
  • Assuming that compound a has only c, h, and one n atoms, determine the molecular formula, and then draw a possible structure if
    8·1 answer
  • Which organic compound consists of the elements carbon, hydrogen, and oxygen and has carbon and hydrogen atoms in a 2:1 ratio?
    13·1 answer
  • If 14.7 g of NO2 are reacted, what mass of H2O is reacted with it?
    9·1 answer
  • A sealed vessel initially contains 100 g of chlorine gas and 90 g of hydrogen gas. The two gases undergo reaction to form HCl. W
    9·1 answer
  • Calculate the molecular mass of iron (Ill) oxide (Fe,O3)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!