Answer:
4.47 x 10²² atoms
Explanation:
1 mole of a substance contains 6.02 x 10²³ atoms
0.074 mole of Bismuth will contain 0.074 x 6.02 x 10²³ atoms
= 4.47 x 10²² atoms
If 0. 200 moles of agno₃ react with 0. 155 moles of h₂so₄ according to this unbalanced equation below, what is the mass in grams of ag₂so₄ that could be formed? agno₃(aq) + h₂so₄ (aq) → ag₂so₄ (s) + hno₃ (aq)
Balance the reaction.
a AgNO₃ (aq) + b H₂SO₄ (aq) → c Ag₂SO₄ (s) + d HNO₃ (aq)
Count the atoms of each element on either side:
• Ag : a = 2c
• N : a = d
• O : 3a + 4b = 4c + 3d
• H : 2b = d
• S : b = c
Let c = 1. Then a = d = 2 and b = 1 and all the counts are consistent. So the balanced reaction is
2 AgNO₃ (aq) + H₂SO₄ (aq) → Ag₂SO₄ (s) + 2 HNO₃ (aq)
which is to say 1 mol H₂SO₄ is needed for every 2 mol AgNO₃ to produce 1 mol Ag₂SO₄.
We start with 0.200 mol AgNO₃, so we can use up at most 0.100 mol H₂SO₄ (and leave an excess 0.055 mol). These react together to produce 0.100 mol Ag₂SO₄
Ag₂SO₄ has a molar mass of about 311.79 g/mol, so this reaction will produce a mass of
(0.100 mol) (311.79 g/mol) ≈ 31.2 g Ag₂SO₄
2. 8g of silicon react with 3. 2g of oxygen to give a compound, which is shown below. The relative atomic mass of silicon is 28 and of oxygen is 16. What is the value of y in the formula below?
Answer:Hope this Helps :D
For Silicon = \frac{0.1}{0.1}=1
0.1
0.1
=1
For Oxygen = \frac{0.2}{0.1}=2
0.1
0.2
=2
Step 3: Taking the mole ratio as their subscripts.
The ratio of Si : O = 1 : 22.8g of silicon react with 3.2g of oxygen to give a compound, which is shown below. The relative atomic mass of silicon is 28 and of oxygen is 16. What is the value of y in the formula below?Moles of Silicon =\frac{\text{Given mass of Silicon}}{\text{Molar mass of Silicon}}=\frac{2.8g}{28g/mole}=0.1moles
Molar mass of Silicon
Given mass of Silicon
=
28g/mole
2.8g
=0.1moles
Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{3.2g}{16g/mole}=0.2moles
Molar mass of oxygen
Given mass of oxygen
=
16g/mole
3.2g
=0.2moles
Step 2: Calculating the mole ratio of the given elements.
For the mole ratio, we divide each value of the moles by the smallest
number of Answer: The value of 'y' in the formula given is 2
Explanation:
We are given:
The given chemical formula of the compound is SiO_ySiO
y
Mass of Si = 2.8 g
Mass of O = 3.2 g
To formulate the empirical formula, we need to follow some steps:
Step 1: Converting the given masses into moles.
Moles of Silicon =\frac{\text{Given mass of Silicon}}{\text{Molar mass of Silicon}}=\frac{2.8g}{28g/mole}=0.1moles
The chemical formula of the compound becomes SiO_2SiO
2
Hence, the value of 'y' in the formula given is 2
What is the greatest contribution of the different elements in our present society.
The contributions of the social elements in society are different fields of intellectual development such as science, technology, art, music, among others.
What are the social elements?Social elements is a term to refer to all kinds of groups, collectives and human communities that make up society and have developed practices and ways of thinking that have contributed to the development of society.
From the above, it can be inferred that the contributions of the social elements are all those intellectual developments that have allowed the invention of new objects and tools to facilitate tasks and disciplines of thought such as:
ScienceTechnologyArtEngineeringMusicPhilosophyAmong others.Learn more about society in: https://brainly.com/question/8706433
Consider the reaction of acetone dissolved in dry ethanol bubbled with hcl(g). Arrange the mechanistic steps, then select the name that best describes the final product. Some steps may be used more than once and not all steps will be used.
When there is a reaction of acetone dissolved in dry ethanol bubbled with HCl(g), The Mechanistic steps are arranged in this way
Protonation of carbonylNucleophilic attack of ethanolDeprotonation of protonated ethenProtonation of the hydroxy grouploss of an H20 leaving group Nucleophilic attack of ethanolDeprotonation of protonated ethenMechanistic stepsA mechanistic is simply the stages of a reaction mechanism. There are 4 different mechanistic steps that are
proton transfer, nucleophilic attack,loss of a leaving group rearrangement.When acetone dissolved in dry ethanol bubbled with HCl(g) the mechanistic steps are as follows
Protonation of carbonylNucleophilic attack of ethanolDeprotonation of protonated ethenProtonation of the hydroxy grouploss of an H20 leaving group Nucleophilic attack of ethanolDeprotonation of protonated ethenMore on Chemical Reaction
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Complete Question
Consider the reaction of acetone dissolved in dry ethanol bubbled with hcl(g). Arrange the mechanistic steps, then select the name that best describes the final product. Some steps may be used more than once and not all steps will be used.
The completion of the question is attached beneath
How did the characters react to conflict in the story “Relationship” By Jhoanna Lynn Cruz
I will give brainliest to the correct answer
.
.
. thanks
What kind of data cannot be gathered through remote sensing.
Answer:
the amount of ice cream sold
A rectangle, a triangle, and two congruent semicircles were used to form the figure shown. Which measurement is closest to the area of the figure in square centimeters?
The closest measurement of the area of the given figure is; 67 cm²
How to find the area of an Irregular Shape?From the attached image, we can get;
Area of rectangle = 8 * 6 = 48 cm²
Area of triangle = ¹/₂ * 6 * 4 = 12 cm²
Area of 2 semi circles = 2 * (¹/₂ * π * 3²/4) = 7 cm²
Total Area = 48 + 12 + 7
Total Area = 67 cm²
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What is the volume of this sphere? 1024π m³ 972π m³ 729π m³ 81π m³ a sphere with a radius of 9 m.
Answer:
972
Explanation:
Answer:
Explanation:
Formula
V= [tex]\frac{4}{3} \pi[/tex]r³
Where r is the radius of a circle.
As given
Sphere with a radius of 9.
r = 9m
Putting all the values in the formula
[tex]\frac{4*9*9*9}{3} \pi[/tex] =[tex]\frac{2916}{3} \pi[/tex]
Therefore the volume of the sphere is
972[tex]\pi[/tex]cm³
Why is the reconstruction of the total past unattainable?
How does spectroscopy provide evidence for the big bang theory.
A bag of marbles contains 4 red marbles and 4 green marbles.
Answer:
Whats the question?? if its ratios then 4:4 and if its fractions red: 4/8 and green:4/8
Explanation:
A projectile is projected from the origin with a velocity of 30
For this we will use kinematic equations.
We need the time of flight to compute the range.
With the given information, the most useful formula is:
Δy=v0yt−g2t2
Because our equation is taking only vertical motion into account,
v0y=30sin(45)
Because we are looking for the range of the object,
Δy=0
This leaves us with only one unknown: t
0=30sin(45)t−g2t2
g2t2=30sin(45)t
g2t=30sin(45)
t=60gsin(45)
For horizontal distance, the formula we need is:
Δx=v0xt
Because we are taking into account the horizontal range,
v0x=30cos(45)
In substituting our derived values into the equation we can see that:
Δx=30cos(45)∗60gsin(45)
Range=30cos(45)∗60gsin(45)
Which best describes the irony in the excerpt? mrs. Crater has never been separated from her daughter, and now she must let her go for two days. Mrs. Crater’s tears are insincere because she is happy that her daughter is finally leaving her alone. Instead of experiencing the joy of gaining a son-in-law, mrs. Crater feels the sorrow of losing her daughter. As the two part ways, lucynell does not feel the same amount of emotional despair as her mother.
The sentence that best describes the irony in the excerpt is the following:
Instead of experiencing the joy of gaining a son-in-law, mrs. Crater feels the sorrow of losing her daughter.
Reading comprehension exercise: The life you save may be your ownIn this exercise, you have to read the short story The life you save may be your own written by the American author Flannery O'Connor.
The short story is about a drifter that meets an old lady and her daughter with disabilities in an isolated farm where they live.
O'Connor usually has morality as a main topic in his short stories.
Check more information of the short story written by Flannery O'Connor here https://brainly.com/question/8388025
In pycharm, write a program that prompts the user for their name and age. Your program should then tell the user the year they were born. Here is a sample execution of the program with the user input in bold:
Answer: See below
Explanation:
#method to calculate the year of birth
def year_of_birth(age):
return 2020-age
if __name__=="__main__": # executing the code using this format if the file is run directly.
#Asking the user to enter his or her name
your_name = input("What is your name?")
#Asking user to enter his or her age
your_age = int(input("How old are you?"))
#Computing the year of birth using the fuction year_of_birth and store the result in your born in variable
your_born_in=year_of_birth(your_age)
#Displaying our results
print("Hello", your_name + "!", "You are born in " + str(your_born_in) + ".");
Happy coding!
Which relation is a function?
Question 1 fill in the blank: every database has its own formatting, which can cause the data to seem inconsistent. Data analysts use the _____ tool to create a clean and consistent visual appearance for their spreadsheets.
Data analysts use the CLEAR FORMAT tool to create a clean and consistent visual appearance for their spreadsheets.
DatabaseA database is an organized collection of data stored in a general or personal computer A database can be created with spreadsheets in order to produce a clean and consistent data for the purpose of study and analysis.
Every database has it own formatting and this leads to data inconsistency as well. To avoid inconsistency of data, Data is cleaned by analysts with the use of the tool clear format.
Hence we can conclude that Data analysts use the clear format tool to create a clean and consistent visual appearance for their spreadsheets.
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Point n(7, 4) is rotated 180° counterclockwise about the origin. What are the coordinates of its image after this transformation? enter your answer by filling in the boxes
Answer: -7 -4
Explanation:
i got it right from a test
The volume of a gas is 400. 0 ml when the pressure is 1. 00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2. 0 l?.
Answer:
0.2 atm
Explanation:
V1 = 400.0 ml = 0.400 l, P1 = 1.00 atm
V2 = 2.0 l, P2=?
At the same temperature, P1 * V1 = P2 * V2, so
P2 = P1 *(V1/V2) = 1.00 * (0.4/2) = 0.2 atm
Why is it important for a novice entrepreneur to build positive relationships with customers.
It is important for a novice entrepreneur to build positive relationships with customers so as to understand their requirements, resolve their problems.
Who is an entrepreneur?An entrepreneur serves as individuals that can take the risk of running a business and make decisions.
However, positive relationships with customers as entrepreneur helps to connect with customers on a much more personal level.
And this helps to create sense of mutual understanding with them.
When Learn more about entrepreneur at;
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What is the area of a sector with a central angle of 3π5 radians and a diameter of 21. 2 cm? use 3. 14 for πand round your final answer to the nearest hundredth. Enter your answer as a decimal in the box. Cm².
Answer:
105.84
Explanation
im just smart ;)
Which level of government is responsible for setting the general rules for voter registration.
I'm pretty sure the answer is Congress
The strategic arms limitation talks (salt i) agreement in 1972 brought about the creation of documents that officially ended the cold war. The us recognition of china for the first time since 1949. The regulation of chinese production of missiles that carried nuclear weapons. The regulation of soviet production of missiles that carried nuclear weapons.
Answer:
It most definitely is D. the regulation of Soviet production of missiles that carried nuclear weapons.
Explanation: sorry if I'm wrong I can't see the right or wrong answers of the unit test.
What brought official document to end cold war was D. the regulation of Soviet production of missiles that carried nuclear weapons.
What was the Cold War?The Cold War serves as the term that describes the unsettling actions that existed between
United States and the Soviet Union.
Therefore, in 1972, an agreement was reached between them, which was inform of documents that contains regulations of arms production.
and their respective allies that developed after World War II.
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#SPJ2
Which of the following countries were part of the eastern bloc? check all that apply. Bulgaria czechoslovakia finland greece poland romania yugoslavia.
Countries that were part of the eastern bloc are :
BulgariaCzechoslovakia Poland RomaniaEastern BlocThe eastern bloc also known as the second world by the western bloc includes states that were socialist states which was in opposition to the western bloc which were capitalist states. the second world was also referred to as USSR.
The USSR comprised mainly of countries from eastern and central europe with the ideas of communism. the USSR was split into several countries in 1991 after the cold war.
Hence we can conclude that Countries that were part of the eastern bloc are :
BulgariaCzechoslovakia Poland RomaniaLearn more about Eastern bloc : https://brainly.com/question/452315
Answer:
Hungary
Explanation:
took the test
Find the amount paid for the loan. $2400 at 10. 5% for 5 years.
Answer:
the awnser is *use googel or a calculator and find the formula its really easy lean it* <3
Explanation:
What is the surface area of the figure? 428 ft² 560 ft² 632 ft² 888 ft².
Answer:
632ft^2
Explanation:
Answer:
632ft
Explanation:
In the counterpoint essay, the author argues that there is an element of danger in the belief that one’s intelligence is fixed at birth. What is this danger, and how would it be avoided by adopting the author’s viewpoint in the essay? explain.
The danger in believing that your intelligence is fixed at birth is that; it could cause you to make a mistake and change everything about yourself or your environment.
What is intelligence?There are many dangers that could be associated with believing that your intelligence is fixed and they include;
It can cause you to give up on a lot of the things you do in life. It could cause you to not want to reach your full potential. It can cause you to make a mistake and change everything about yourself or your environment.Read more about intelligence at; https://brainly.com/question/18707238
What do flavius and marullus hope disrobing the images and statues of caesar and taking down his trophies will indicate about caesar? caesar will soon gain more power and trophies. Caesar will soon be stripped of his position of power. Caesar’s selfishness will make the commoners turn against him. Caesar dislikes any outward show of gratitude or praise from the roman people
What Flavius and Marullus hope by disrobing the images of Caesar along with his trophies is that B). Caesar will soon be stripped of his position of power.
What is the image of Caesar all about?Caesar image can be described as a "tall stature with a fair complexion and shapely limbs.
It represents the position of power, it posses a somewhat full face, and keen black eyes.
Learn more about Caesar at;
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Answer:
B
Explanation:
Fekru knows that when his teacher pours water from a small, wide glass into a tall, thin glass, the amount of water remains the same even though the tall, thin glass looks like it has more water. Which of the following theories best explains fekru’s ability?.
Fekru’s ability is a logical thinking ability according to the theory of Conservation by Jean Piaget.
Jean Piaget's theory of conservationThe Theory of Conservation according to Jean Piaget in child development explains that quantity remains the same even if the container to transfer such quantity is changed in size or colour
The ability to understand this shows the child has developed logical thinking ability.
This ability in children is noticed in the concrete operational stage from ages 7–11
Therefore Fekru understanding that the quantity of water did not change irrespective of the change in glass explains the theory of Conservation.
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A cylinder shaped bucket is used as a sand container. The bucket has a height of 2. 5 ft and a radius of 0. 5 ft. How many cubic feet of sand does the bucket hold? use 3. 14 to approximate pi. Enter your answer as a decimal rounded to the nearest hundredth in the box.
[tex] \quad\rule{300pt}{1pt}\quad[/tex]
Ⲋⲟⳑⳙⲧⳕⲟⲛ :We are given that a cylinder shaped bucket is used as a sand container . We have to find how much sand it can hold , which can be found by knowing the volume of cylindrical bucket .The volume of a cylinder is given by :
[tex] \quad\dashrightarrow\quad {\pmb{\sf {Volume = \pi r^2 h }}}[/tex]
where,
π = 3.14r = 0.5 feet h = 2.5 feet[tex] \quad\dashrightarrow\quad \sf {V =\pi r^2 h }[/tex]
[tex] \quad\dashrightarrow\quad \sf { V = 3.14 \times 0.5^2 \times 2.5}[/tex]
[tex] \quad\dashrightarrow\quad \sf {V = 3.14\times 0.5\times 0.5\times 2.5 }[/tex]
[tex] \quad\dashrightarrow\quad \sf {V = 1.9625 }[/tex]
ㅤㅤㅤㅤㅤ~Hence, the bucket can hold 1.96 feet³ of sand!
[tex]\rule{350pt}{2pt} [/tex]
A substantial fraction of borrowers owe less than 5,000 who do you think is represented in this debt range and why might the number of borrowers in this range be so large
The amount owed is illustrated in the debt range to show the importance of education and how it had become expensive.
What is debt?It should be noted that debt simply means the amount of money that's is owed by an individual.
In this case, a substantial fraction of borrowers owe less than 5,000 because it's mainly the debt attributed to students.
The number of borrowers in this range can be so large because education gas become expensive and the interest rate on students loans are compounded.
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