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
Colt1911 [192]
4 years ago
14

Assuming an efficiency of 49.50%, calculate the actual yield of magnesium nitrate formed from 130.7 g of magnesium and excess co

pper(II) nitrate. Mg+Cu(NO3)2⟶Mg(NO3)2+Cu actual yield:
Chemistry
1 answer:
Novay_Z [31]4 years ago
8 0

Answer:

73.41 g

Explanation:

Mg + Cu(NO_{3})_{3}   ---> Mg(NO_{3})_{3} + Cu

First find number of moles of Mg

n(Mg)= \frac{mass}{molar mass} = \frac{130.7 g}{24.3050 g/mol}= 5.377 mol\\

Second, find the number of moles of magnesium nitrate produced by this number of moles of magnesium.

The molar ratio is one is to one (using stoichiometric coefficients from the balanced equation). So 5.377 mol of magnesium produces 5.377 mol of magnesium nitrate

Third, find what mass of magnesium nitrate that is

mass(Mg(NO3)2) = mol * molar mass

                            = 5.377 mol * 148.3148 g/mol

                            = 148.3148 g

But the system is inefficient. It only has an efficiency of 49.50 so what will be the actual, not theoretical yield.

actual yield = efficiency * theoretical yield

                   =  49.5% * 148.3148 g

                    = 73.41  g

You might be interested in
The enzyme Y catalyzes the elementary reaction
lions [1.4K]

Answer:

0.7μM = 0.6 μM = 0.5 μM > 0.4 μM > 0.3 μM > 0.2 μM

Explanation:

An enzyme solution is saturated when all the active sites of the enzyme molecule are full.  When an enzyme solution is saturated, the reaction is occurring at the maximum rate.

From the given information, an enzyme concentration of 1.0 μM Y can convert a maximum of 0.5 μM AB to the products A and B per second means that a 1.0 M Y solution is saturated when an AB concentration of 0.5 M or greater is present.

The addition of more substrate to a solution that contains the enzyme required  for its catalysis will generally increase the rate of the reaction. However, if the enzyme is saturated with substrate, the addition of more substrate will have no effect on the rate of reaction.

<em>Therefore the reaction rates at substrate concentrations of 0.7μM, 0.6 μM, and 0.5 μM are equal. But the reaction rate at substrate concentrations of  0.2 μM is lower than at 0.3 μM, 0.3 μM is lower than 0.4 μM and 0.4 μM is lower than 0.5 μM, 0.6 μM and 0.7 μM.</em>

6 0
3 years ago
Enter the maximum number of electrons in each type of sublevel (s, p, d, and f, respectively)
Ksivusya [100]
The maximum number of electrons:
- s sublevel: 2 electrons,
- p sublevel: 6 electrons,
- d sublevel: 10 electrons,
- f sublevel : 14 electrons.
7 0
3 years ago
Which field of science studies the composition and structure of matter
aleksandrvk [35]
Chemical science deals with mater like compound mater 
6 0
3 years ago
Which of the following is considered a drawback to using wind energy as a source of power?
Olin [163]

Answer:

Option (3)

Explanation:

Wind energy is directly derived from the wind. In the places where wind blowing is quite frequent, there wind mills are being set up, and the turbines in it rotates due to the prevailing wind. Due to this continuous motion of turbines, it collects the wind energy and it is being transferred into electrical energy.

It is cost-effective and does not produce any kind of pollution and is completely a renewable energy, that it can generated again and again.

It does have certain drawbacks also, because <u>the area may sometime do not experience constant wind, due to which it cannot store energy. So frequent wind blowing areas are the best place to set up windmills</u>.

Thus, the correct answer is option (3)

5 0
3 years ago
Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2
Kamila [148]
The atomic mass would be 28.08535 amu. Multiply 27.9769 by .92297 = 25.803. Multiply 28.9765 by .046832 to get 1.357. Multiply 29.9738 by .03872 to get .925351136. Add 25.803 + 1.357 + .03872 to get 28.08535 amu
6 0
4 years ago
Other questions:
  • Which focuses on the composition of matter
    9·1 answer
  • Which of the following chemical equations is NOT correctly balanced?
    13·1 answer
  • 1. particles of an atom.<br> 2. what is a neutron
    15·2 answers
  • Would you want the starting reactants in an airbag system to have higher density or a lower density
    5·1 answer
  • A homogeneous mixture is a composition of two or more
    9·1 answer
  • BALANCE the following equations then write the NET IONIC EQUATION for each one: ____Ni(NO​ 3​ )​ 2​​(aq)​ + ____NaOH ​(aq)​ ​→ ​
    5·1 answer
  • What factors affect the radius of an atom?
    6·1 answer
  • HELP I DON'T HAVE LONG LEFT AND I'M STRUGGLING SO BAD PLEASE I BEG U TO HELP
    8·1 answer
  • In a solution, litmus is blue. The pH of the solution could be<br> 1. 10<br> 2. 2<br> 3. 3<br> 4. 4
    11·1 answer
  • HELP PLSSSS perfect this pls and add more!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!