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
Natalka [10]
3 years ago
7

A student is given 1.4583 g of pure CuO. To recover the Cu present in the compound, the dark powdery solid was dissolved in 15.0

mL of 6 M HCl and the solution was diluted to 50.0 mL with water. How many grams of Mg is needed to displace all of the copper (II) ions from the solution? Mg(s) + Cu2+(aq) --> Cu(s) + Mg2+(aq)
Chemistry
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

0.4402 grams of Mg is needed to displace all of the copper (II) ions from the solution.

Explanation:

Moles of CuO = \frac{1.4583 g}{79.5 g/mol}=0.01834 mol

1 mole of CuO has 1 mole of Cu^{2+} ions, then 0.01834 molesof CuO will have 0.01834 moles of

Mg(s) + Cu^{2+}(aq)\rightarrow Cu(s) + Mg^{2+}(aq)

According to reaction , 1 mole of copper (II) ion reacts with 1 mole of magnesium solid .

Then 0.01834 moles of copper (II) ion will react with :

\frac{1}{1}\times 0.01834 mol=0.01834 mol of magnesium.

Mass of 0.01834 moles of magnesium :

0.01834 mol × 24 g/mol = 0.4402  g

0.4402 grams of Mg is needed to displace all of the copper (II) ions from the solution.

You might be interested in
How many grams of h2o are needed to produce 45g of NO
schepotkina [342]

We need (i) the stoichiometric equation, and (ii) the equivalent mass of dihydrogen.
Explanation:
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
→
N
H
3
(
g
)
11.27

g
of ammonia represents
11.27
⋅
g
17.03
⋅
g
⋅
m
o
l
−
1

=

?
?

m
o
l
.
Whatever this molar quantity is, it is clear from the stoichiometry of the reaction that 3/2 equiv of dihydrogen gas were required. How much dinitrogen gas was required?
4 0
3 years ago
Compare the rates of effusion for carbon monoxide and carbon dioxide gases
Airida [17]
According to Grahams law the rate of effusion of a gas is inversely proportional to the square root of it's molecular weight. The rate of diffusion is the measure of rate at which two gases mix. From this law we can say that for the two gases carbon monoxide and carbon dioxide, the rate of effusion of carbon monoxide is greater than that of carbon dioxide, this is because carbon monoxide is lighter (28 g) compared to carbon dioxide (44 g). 
7 0
3 years ago
What is the energy conversion that occurs in cellular respiration?
fomenos
Cellular respiration is the process by which the chemicalenergy of "food" molecules is released and partially captured in the form of ATP. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved.
3 0
3 years ago
The element born, b, has an atomic mass of 10.81 amu according to the periodic table. however, no single atom of boron has amass
klio [65]
The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. The dimensionless standard atomic weight instead refers to the AVERAGE of atomic mass values of a typical naturally-occurring mixture of isotopes for a sample of an element.
You can count it by yourself using formula

m = ({first isotopic distribution%}× {first atomic.mass})+ ({second isotopic distribution%}× {second atomic.mass}) / {100}
5 0
3 years ago
What are some geographic features that could be found in the hydrosphere?
nadezda [96]

Lakes, oceans, glaciers, clouds, etc. It categorizes all forms of water on earth.

hydro = water

6 0
3 years ago
Other questions:
  • In the gizmo what light intensity in CO2 level do you think will maximize the rate photosynthesis
    15·1 answer
  • What is an example of a physical change
    10·2 answers
  • Sodium-24 has a half life how much sodium-24 will remain in an 18 g sample after 75 hours
    15·1 answer
  • Which statement about chemical reactions is not true?
    9·1 answer
  • When 1.50 mol of solid aluminum metal reacts with 3.00 mol of chlorine gas (CI2), aluminum chloride solid is formed. Which is th
    15·1 answer
  • Why did bohrs observations of gaseous elements not reveal a complete spectrum when the light was shone through a prism? explain
    5·1 answer
  • What kind of chemical reaction is this?
    14·1 answer
  • What letter represents the activation energy for the reverse reaction?
    12·1 answer
  • If 8.0 g of sulfur dioxide came in contact with a cloud containing 2.2 g of oxygen, indicate the
    6·1 answer
  • Since volume and temperature are constant, this means that pressure and_____are____proportional. the sample with the largest____
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!