Determine the percent yield for the reaction between 46.5 g of
ZnS and 13.3 g of oxygen if 18.l4 g of ZnO is recovered along with an unknown quantity of sulfur
dioxide.
please show work thank you
Answers
The percentage yield of the reaction has been 46.74%.
Percentage yield can be given as the ratio of the actual yield to the theoretical yield.
For the theoretical yield, the balanced equation will be:
[tex]\rm 2\;ZnS\;+\;3\;O_2\;\rightarrow\;2\;ZnO\;+\;2\;SO_2[/tex]
Thus, 2 moles of ZnS will give 2 moles of ZnO.
The moles of 46.5 g ZnS:
Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]
ZnS = [tex]\rm \dfrac{46.5}{97.474}[/tex]
ZnS = 0.477 mol
The moles of 13.3 grams Oxygen:
Oxygen = [tex]\rm \dfrac{13.3}{32}[/tex]
Oxygen = 0.415 mol.
The moles of 18.14 grams ZnO:
ZnO = [tex]\rm \dfrac{18.14}{81.38}[/tex]
ZnO = 0.222 mol
According to the balanced chemical equation,
2 moles ZnO = 2 moles ZnS
0.222 mol ZnO = 0.222 mol ZnS
2 moles ZnO = 3 moles Oxygen
0.222 mol ZnO = 0.334 mol of Oxygen
Since, both the reactants are in enough concentration,
The theoretical yield can be calculated with any of the reactants. The theoretical yield of ZnO from 46.5 grams of ZnS can be given as:
1 mole ZnS = 1 mol ZnO
0.477 mol of ZnS = 0.477 mol of ZnO.
The mass of 0.477 mol of ZnO:
Mass = moles [tex]\times[/tex] molecular weight
Mass of ZnO = 0.477 [tex]\times[/tex] 81.38
Mass of ZnO = 38.818 grams.
The theoretical yield of ZnO = 38.818 g.
The actual yield of ZnO = 18.14 g.
Percentage yield = [tex]\rm \dfrac{18.14}{38.81}\;\times\;100[/tex]
Percentage yield = 46.74 %
The percentage yield of the reaction has been 46.74%.
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other atmospheric conditions at any given time describes what?
A Controls
B Climate
C Tropics
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If the atomic number of an element is 8 and the mass number is 16, the number of neutrons in an atom of that element is what? (show work)
Answers
Answer:
8.
Explanation:
Atomic number tells us the number of protons in an element. Mass number is the total amount of mass in an atom, and it comes from the sum of the mass of protons and neutrons, which are both considered to have a mass of 1 amu.
If the total mass is 16amu and 8amu comes from the 8 protons, the remaining mass comes from neutrons.
16 - 8 = 8
Determine the percent yield for the reaction between 98.7 g of
Sb2S3 and excess oxygen gas if 72.4 g of Sb4O6 is recovered along with an unknown amount of sulfur dioxide.
Answers
Convert mols Sb2S3 to mols Sb4O6 using the coefficients in the balanced equation.
Convert mols Sb4O6 to grams Sb4O6. (This is the theoretical yield.)
Convert grams Sb4O6 to percent Sb4O6.
%Sb4O6 = [72.4/theoretical yield]*100
So basically your answer is 85.5%
The percent yield of the reaction would be 85.64%
Percent YieldFrom the balanced equation of the reaction:
[tex]9 O_2 + 2 Sb_2S_3 ---> 6 SO_2 + Sb_4O_6[/tex]
Mole ratio of Sb2S3 to Sb4O6 is 2:1
Mole of 98.7g Sb2S3 = 98.7/339.7
= 0.29 moles
Equivalent mole of Sb4O6 = 0.29/2
= 0.145 moles
Mass of 0.145 Sb4O6 = 0.145 x 583
= 84.535 g
Percent yield = yield/theoretical yield x 100
= 72.4/84.535 x 100
= 85.64%
More on percent yield can be found here: https://brainly.com/question/2506978?referrer=searchResults
What does steel classify as?
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Pleaseeee someoneee helppp meee
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Answer:
provisioning
Explanation:
this is a product obtained from an ecosystem which would be provision.
Severe storms all have extremely strong winds that can cause a lot of environmental damage.
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A rectangular poster is /4 yard wide and / yard tall. What is its area? Solve this problem any way you choose
Answers
Answer:
Area of rectangular poster = [tex]\frac{3}{16}[/tex] yard²
Explanation:
P.S - The exact question is -
Given - A rectangular poster is [tex]\frac{1}{4}[/tex] yard wide and [tex]\frac{3}{4}[/tex] yard tall.
To find - What is its area ?
Proof -
We know that ,
The area of rectangle = Length × Breadth
Here,
Given that,
Length of rectangle = [tex]\frac{3}{4}[/tex] yard
Breadth of rectangle = [tex]\frac{1}{4}[/tex] yard
∴ we get
Area of rectangular poster = [tex]\frac{3}{4}[/tex] × [tex]\frac{1}{4}[/tex] yard²
= [tex]\frac{3}{16}[/tex] yard²
⇒Area of rectangular poster = [tex]\frac{3}{16}[/tex] yard²
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Answer:
I hope it's help uu
if wrong then sry
Mixing salt with sugar is a chemical change true or false?
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Answer:
False unless you add something else with the like the common sugar ice and salt science project.
Explanation:
Answer:
No
Explanation:
No, mixing salt and sugar is not a chemical reaction. Chemical reactions result in the change of chemical composition of one or more substances(it is no longer able to be turned back to normal
The equation for the complete combustion of ethene (C 2 H 4 ) is C 2 H 4 + 3O 2 2CO 2 + 2H 2 O If 2.70 mol of C 2 H 4 reacted with 6.30 mol , O 2 a. Identify the limiting reagent. b. Calculate the moles of water produced .
Answers
Answer:
22
Explanation:
In a chemical reaction*
1 point
The atoms of the reactants unbond, rearrange, and then rebond to form the products
Some atoms disappear while others multiply to form the products
The atoms of the reactants always stay together to form the products
New atoms are formed which combine to make the products
Answers
Answer:
1st one is correct
The atom of the reactants unbound , rearrange, and then rebond to form the product
hope it helps
In a chemical reaction, the atoms of the reactants unbond, rearrange, and then rebond to form the products. Therefore, option A is correct.
What is chemical reaction ?Chemical reaction, the transformation of one or more chemicals the reactants into one or more distinct compounds, the products. Chemical elements or chemical compounds make up substances.
Combustion reaction, decomposition reaction, neutralization reaction, redox reaction, precipitation or double-displacement reaction, and synthesis reaction are some of the numerous types of reactions.
In a chemical reaction, bonds between molecules of the reactant are broken and new bonds between molecules of the product are established to create a new substance.
A chemical equation is nothing more than a mathematical statement that represents how reactants form products.
Thus, option A is correct.
To learn more about chemical reaction, follow the link;
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Please help with this question
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THE ANSWER IS c:0%
HOPE IT MAY HELPS YOUwhy is respiration considered an exothermic process
Answers
Answer:
Respiration is considered as exothermic reaction because energy is released in this process. Glucose combines with oxygen present in our cells to form carbon dioxide and water along with energy.
Explanation:
Good Luck!
Respiration is considered as an exothermic reaction because, in the respiration process, oxidation of glucose takes place which produces a large amount of heat energy stored in the form of ATP. This is shown in the following chemical equation C 6
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Answer:
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Explanation:
when I had to do these types of equations just search them up on you-tube lol theres this guy called Wayne Breslyn that does a really good job of explaining and has like the answers for any and everyy balancing equation
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M
a
V
a
=
M
b
V
b
M
a
= 6.77M - the initial molarity (concentration)
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a
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b
= (15.00 + x mL) - the volume of the desired solution
(6.77 M) (15.00 mL) = (1.50 M)(15.00 mL + x )
101.55 M mL= 22.5 M mL + 1.50x M
101.55 M mL - 22.5 M mL = 1.50x M
79.05 M mL = 1.50 M
79.05 M mL / 1.50 M = x
52.7 mL = x
59.7 mL needs to be added to the original 15.00 mL solution in order to dilute it from 6.77 M to 1.50 M.
I hope this was helpful.
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O metamorphism
O cooling
O subduction
O deposition
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Answer:
deposition
Explanation:
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Answer:
Condensation
Explanation:
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Answer:
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Explanation:
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B. protective resemblance
C. mimicry
D. protective coloration
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Answer:
The answer to your question is A.
D. Protective coloration. Protective coloration, also known as "crypsis," is a defense mechanism used by animals to avoid detection by predators or prey.
An illustration of protective coloration, which is a sort of camouflage, is how white arctic hares blend in with the white snow around them. Animals use protective coloration, commonly referred to as "crypsis," as a defensive strategy to evade being seen by predators or prey.
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Answer:
B
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Ionic compound can conduct electricity
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Answers
In a chemical reaction
1 point
The atoms of the reactants unbond, rearrange and then rebond to form the products
Some atoms disappear while others multiply to form the products
The atoms of the reactants always stay together to form the products
New atoms are formed which combine to make the products
Answers
Answer:
A) The atoms of the reactants unbond, rearrange and then rebond to form the products
Explanation:
Using method of elimination:
A) The atoms of the reactants unbond, rearrange and then rebond to form the products
This is the correct option. Chemical reactions involves breaking and forming of new bonds.
B) Some atoms disappear while others multiply to form the products
This option is incorrect. Atoms do not disappear
C) The atoms of the reactants always stay together to form the products
This option is incorrect. The bonds between the atoms in the reactants must first be broken before products can be formed.
D) New atoms are formed which combine to make the products
This option is incorrect. Atoms do not just form out of nowhere.
Why are scientists worried that climate change will cause these toxic algae blooms to become more frequent?
Answers
Answer:
I would assume it would kill marine life and or a shift in the climate may possibly create a better environment for the algae to grow Don't quote me on that though I couldn't tell you
Answer:
It may kill marine life and or a shift in the climate might make better growth of algae possible.
Which type of reaction occurs in the following?
2HgO(s) Right arrow. 2Hg(l) + O2(g)
a decomposition reaction in which a metal is reduced
an acid-base neutralization reaction to produce oxygen gas
a displacement reaction involving two metals
a combustion reaction involving burning a metal in oxygen
Answers
Answer:
decomposition
Explanation:
the reactants turn into two different products, thus the reaction is decomposition.
AB -> A + B
Answer:
A: a decomposition reaction in which a metal is reduced
Explanation:
HgO is actually the metal Mercury and in the equation Mercury is being decomposed into the elements Hg and O. (the element for Mercury and Oxygen) So the equation they give you is a decomposition.
Does anyone knows how to solve this??
Answers
Answer:
²⁴³₉₅Am --> ²³⁹₉₃Np + ⁴₂He
Explanation:
In alpha decay;
The mass number decreases by 4
Atomic Number decreases by 2
Mass Number = 243 - 4 = 239
Atomic Number = 95 - 2 =93
Element = Neptunium (Np)
Equation for the decay is given as;
²⁴³₉₅Am --> ²³⁹₉₃Np + ⁴₂He