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
nexus9112 [7]
3 years ago
14

QUESTION 17

Chemistry
1 answer:
Zarrin [17]3 years ago
6 0

Answer:

72.3%

Explanation:

The following data were obtained from the question:

Theoretical yield of MgO = 3.43 g

Actual yield of MgO = 2.48g

Percentage yield of MgO =.?

Percentage yield of a reaction can simply be obtained by dividing the actual yield by the theoretical yield multiplied by 100. This is illustrated below:

Percentage yield = Actual yield /Theoretical yield × 100

Thus, we can obtain the percentage yield of MgO as follow:

Theoretical yield of MgO = 3.43 g

Actual yield of MgO = 2.48g

Percentage yield of MgO =.? Percentage yield = Actual yield /Theoretical yield × 100

Percentage yield = 2.48/3.43 × 100

Percentage yield = 72.3%

Therefore, the percentage yield of MgO is 72.3%.

You might be interested in
What happens when an electron absorbs energy?
Leto [7]
Gets exited and moves at a faster constant speed

7 0
3 years ago
What are the basic building blocks of matter?
Naddik [55]
Elements because elements make up atoms which make up everything
8 0
3 years ago
Read 2 more answers
The decomposition of N_2O_5(g) following 1st order kinetics. N_2O_5(g) to N_2O_4(g) + ½ O_2(g) If 2.56 mg of N_2O_5 is initially
Crank

Answer: The rate constant is 0.334s^{-1}

Explanation ;

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = ?

t = age of sample  = 4.26 min

a =  initial amount of the reactant  = 2.56 mg

a - x = amount left after decay process  = 2.50 mg

Now put all the given values in above equation to calculate the rate constant ,we get

4.26=\frac{2.303}{k}\log\frac{2.56}{2.50}

k=\frac{2.303}{4.26}\log\frac{2.56}{2.50}

k=5.57\times 10^{-3}min^{-1}=5.57\times 10^{-3}\times 60s^{-1}=0.334s^{-1}

Thus rate constant is [tex]0.334s^{-1}

4 0
3 years ago
38) Which of the following is not a reaction of alcohol
mylen [45]
<h2>I guess...</h2>

<h3>Dehydration </h3>
8 0
3 years ago
4.5x10'25 atoms of nickel equal how many moles
olga2289 [7]
1 mole of any particles = 6.02* 10²³ particles

4.5*10²⁵ atoms Ni* 1 mol Ni/6.02*10²³ Ni ≈ 74.75≈ 75 mol Ni
 
8 0
3 years ago
Other questions:
  • How many moles of Al2O3 will be formed when 27 grams of Al reacts completely with O2?
    8·1 answer
  • Why is potassium nitrate classified as aj electrolyte?
    15·2 answers
  • Calculate the mass (in kg) of water produced from the combustion of 1.0 gallon (3.8 L) of gasoline (C8H18). The density of gasol
    11·2 answers
  • If you were in a completely dark room, the room would still be "shining" in this type of light:
    7·1 answer
  • Metallic element are _____ (conductors or non-conductors), because ________. Nonmetallic elements are generally ____ (conductors
    14·1 answer
  • Which of these is not a postulate of the kinetic-molecular theory of gases?
    7·1 answer
  • Determine the pH of a 2.8 ×10−4 M solution<br> of Ca(OH)2.
    8·1 answer
  • Tendency of some minerals to break along a smooth flat surface
    11·1 answer
  • 1a. Review What holds the hydrogen and oxygen<br> atoms together in a water molecule?
    13·1 answer
  • What is the average kinetic energy and rms speed of N₂ molecules at STP? Compare these values with those of H₂ molecules at STP.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!