The number of grams of lead product that would theoretically be produced from the given reaction is; Mass of lead product = 23.6 g
Potassium iodide reacting with Lead(II) Nitrate would yield the balanced equation;
2KI + Pb(NO₃)₂ = 2KNO₃ + PbI₂
2moles : 1 mole = 2 moles : 1 mole
From online tables;
Molar mass of KI = 166 g/mol
Molar mass of Pb(NO₃)₂ = 331.2 g/mol
We are given;
Mass of KI = 17 g
Mass of Pb(NO₃)₂ = 25 g
Thus;
Number of moles of PbI₂ yielded in order to find the limiting reactant will be;
no of moles of PbI₂ from KI = (17g/166 g/mol) × (1 mole of PbI₂/2 mol of KI)
no of moles of PbI₂ from KI = 0.0512 mols
Similarly;
no of moles of PbI₂ from Pb(NO₃)₂ = (25g/331.2 g/mol) × (1 mole of PbI₂/1 mol of Pb(NO₃)₂)
no of moles of PbI₂ from Pb(NO₃)₂ = 0.0755 moles
We can see that KI produced the least amount of moles. Thus;
Mass = 0.0512 * molar mass of PbI₂
From tables, molar mass of PbI₂ = 461 g/mol
Thus;
Mass of lead product = 461 * 0.0512
Mass of lead product = 23.6 g
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The time that customers wait to be served at the deli for a grocery store follows the uniform distribution between 0 and 7 minutes. What is the probability that a randomly selected customer will wait more than 4 minutes at the deli?.
The probability that a randomly selected customer will wait more than 4 minutes at the deli is given below
The probability that a randomly selected customer will wait more than 4 minutes = [tex]0.4286[/tex]The waiting time for the customers is uniformly distributed between 0 - 7 minutes
Consider a random variabe X that represents the waiting time of customers and uniformly distributed between 0-7 minutes
Therefore, the density function of X is determined as
[tex]f(x) = \frac{1}{b-a}\\\\f(x) = \frac{1}{7-0}\\\\f(x) = \frac{1}{7}[/tex]
The probability that the customer will wait more than 4minutes,
[tex]P(X>4) = \int\limits^7_4 f{x} \,dx\\\\= \int\limits^7_4 \, \frac{1}{7}dx\\\\= \frac{1}{7} * [x]^7_4\\\\= \frac{7-4}{7} \\\\= 0.4286[/tex]
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Throwing a snowball during a snow ball fight is most like an example of.
Answer:
Accumulation
Choices should be:
Weather, erosion, deposition, and acumulation
Explanation:
This is because the snow had to accumulate enough in order to make a snowball.
-Lexi
Which scenario can be represented using the inequalities below? 1. 25 < x < 1. 5 a container of milk costs at least $1. 25 but less than $1. 50. A student spends at least 1 hour 15 minutes, but no more than 1 hour 30 minutes on homework. A tip added to a restaurant bill is less than or equal to 25% or less than or equal to 50%. The point value of a test item is more than 1. 25 points and less than 1. 5 points.
Answer:
Explanation:22
When i get multiplied by any number, the sum of the figures in the product is always me. What am i?.
Answer:
sorry I cannot answer your question I'm just commenting for points
How many moles of helium atoms are there in 2. 4 x 1024 helium atoms?.
Answer:
n = (2.4 x 10^24 atoms) x ((1 mol)/(6.02 x 10^23 atoms)) = 4.0 mol
pizza with peparoni or pizza with mustard and pinaple choose wisley ; -)
Answer:
This is an SAT question, so I will be proofreading this for grammar.
The first pizza should be capitalized.
Peparoni is spelled wrong
Pinaple is spelled wrong
wisely is spelled wrong
There should be a period between "pinaple" and "choose"
The first half beginning with "pizza" and ending with "pinaple" is an incomplete sentence.
By the way, I would prefer pineapple.
Which main problem is being solved by the hubble space telescope?.
The Hubble Space Telescope's primary problem is option D, i.e., trying to identify the brightest stars in the galaxy.
What is a Hubble Space Telescope?The Hubble Space Telescope is a space telescope that was initiated into low Earth orbit in 1990 and is still active today.
It was not the first space telescope, but it is one of the biggest and most versatile, known for its importance as a research tool as well as a public relations boon for astronomy.
Hubble was intended to be a multi-purpose observatory capable of exploring the universe in visible, ultraviolet, and infrared wavelengths.
To date, the telescope has studied over 40,000 cosmic objects, providing views that astronomers could not obtain from the ground.
The primary challenge for the Hubble Space Telescope is identifying the brightest stars in the galaxy.
Thus, the correct option is D.
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Which statement best summarizes brown’s message in this essay?.
Answer:
where the essay?
Explanation:
In texas longhorn cattle, coat coloration is an inherited trait. What is the genetic basis of coat-color variation in texas longhorn cattle?.
The genetic basis of coat-color variation in texas longhorn cattle is simply a result of the differences in the nucleotide of genes.
It should be noted that during gene transcription, there'll be a segment of a gene that's used in creating a complementary mRNA.
The differences in the nucleotide of genes will result in the genetic basis of coat-color variation in texas longhorn cattle. Some of the traits that are applicable to the cattle include color, confirmation, and personality.
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Lines l and m are parallel. Line l can be represented by.
If a fish possesses the ability to produce copious amounts of urine and the ability to move ions via active transport across the gills, what would be the expected habitat of the fish?.
Answer:
Their StrengthExplanation:
Where's the choices my answer is their Strength I thinkWhich of the following statements is true regarding this data set: 41, 13, 17, 10, 5, 19?.
Answer:
this question is meaningless because Where the choice
Even at moderate temperatures, attractions between molecules seem to have little effect on the elasticity of gas-gas collisions because.
Attractions have little effect on the elasticity of gas-gas collisions because they are brief and fast. These particle collisions exhibit insufficient time to significantly affect the entire system.
The Kinetic Molecular Theory (KMT) is a model used in order to describe the behavior of gases by understanding the behavior of an ideal gas.
According to this theory, collisions between particles of gases are elastic, and therefore the kinetic energy is conserved when they collide.
An elastic collision can be defined as a type of collision between two particles in which the total kinetic energy remains the same.
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The van der waals forces of attraction between molecules always become stronger as molecular size.
Answer: Decreases.
Explanation: the smaller the molecule the stronger the force
Why doesn’t people like me?
they're fake people. trust me i've been in this stage of life multiple times
just keep your head and find the true ones :))
what this is brainly
Chocolate candy in your hand will eventually melt.
yes it would by the heat
Explanation:
heat makes stuff really hot
Which citation is formatted correctly using mla guidelines? barrett, leigh. Snow removal woes. "hartford times-dispatch" 12 january 2012: b12. Print. Barrett, leigh. Snow removal woes. Hartford times-dispatch, metro section 12 january 2012: b12. Barrett, leigh. "snow removal woes. " hartford times-dispatch 12 january 2012: b12. Print. Barrett, leigh. "snow removal woes. " hartford times-dispatch, metro section 12 january 2012: b12.
The citation that is formatted correctly using MLA's guidelines is;
Barrett, Leigh. "Snow Removal Woes." Hartford Times-Dispatch 12 January 2012: B12. Print.
MLA simply means Modern Language Association. This is a format that states that when citing a newspaper article, we must write in the following order;
Write the author's last name. Write his first nameWrite the title of the article. Write the newspaper title. Write the name of the city. Write the date and month and year of publication, and print.The only option that follows this MLA format guidelines correctly is;
"Barrett, Leigh. 'Snow Removal Woes.' Hartford Times-Dispatch 12 January 2012: B12. Print.".
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Answer:
ccccccc
Explanation:
ccccccc
Close reading: according to document d, why did texans revolt?.
Answer: We cannot tell you bc:
Explanation:
There is no document on here
It takes 87 j of work to stretch an ideal spring, initially 1. 4 m from equilibrium, to a position 2. 9 m from equilibrium. What is the value of the spring constant (force constant) of this spring?.
The spring undergoes a change in potential energy of
1/2 k (2.9 m)² - 1/2 k (1.4 m)² = 87 J
Solve for k :
k ((2.9 m)² - (1.4 m)²) = 174 J
k = (174 J) / ((2.9 m)² - (1.4 m)²)
k ≈ 27 N/m
Which of the following statements is true about the occupations available to psychologists with a doctoral degree? a. Occupations are limited to social services jobs, mid-level managers, and financial positions. B. Occupations are vast and can include positions in universities, health care, and private industry. C. Occupations are confined to clinical and counseling positions in hospitals, schools, and prisons. D. Occupations are immense but competitive, so psychologists usually work in accounting.
Answer:
b
Explanation:
the answer is b ,
Occupations are vast and can include positions in universities, health care, and private industry
Answer:
its B
Explanation:
trust me
According to a recent survey 31 percent of the residents of a certain state.
Answer:
the question is incomplete
Explanation:
Place the events that form hurricane-force winds in order.
Answer: The events that form hurricane-force winds are as follows
1. Tropical disturbance
2. Tropical depression
3. Tropical storm
4. Hurricane.
Explanation:
All of the above-mentioned events happen in chronological order for the hurricane-force winds to occur.
1. Tropical disturbance occurs from the tropics and the subtropics. These are generally 100-300 miles in diameter. It is a tropical weather system of organized conventions. This is the first stage that consists of a loosely organized low-pressure area.
2. Tropical depression is a more organized deep convention and has a closed circulation of sustained winds of less than 39 mph.
3. Tropical storm is the third stage that has sustained winds between 39 - 73 mph.
4. The hurricane is created when the sustained winds finally reach or cross the speed of 74 mph.
This is how hurricane-force winds are created.
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A particle moves along the curve y = 4x2 + 1 in such a way that the x value is increasing at the rate of 2 units per second. At what rate is y changing when x = 1?.
By differentiating both sides of y = 4x² + 1 with respect to time t, we have
dy/dt = 8x dx/dt
If the x value changes at a rate of +2 units/second (that is, dx/dt = 2) at the moment x = 1, then the y value changes at a rate of
dy/dt = 8 • 1 • 2 units/s = 16 units/s
A baker has her hand-mixer set to high to mix a cake batter. She can turn it down to low or turn it off. Which best describes what she did during the time shown on the graph?.
The description on the graph is: (c) after 30 seconds, she turned it down to low for 30 seconds. She turned it back to high for 60 seconds, then turned it off.
From the complete question, we have the following highlights
The graph has three horizontal linesOne of the lines is on the x-axisThe other lines represent high and low, and they have intervals of 30 and 60 seconds, respectivelyHence, the description on the graph is:
After 30 seconds, she turned it down to low for 30 seconds. She turned it back to high for 60 seconds, then turned it off.Read more about graphs at:
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Answer:
After 30 seconds, she turned it down to low for 30 seconds. She turned it back to high for 60 seconds, then turned it off.
Explanation:
got it right on ttm
The computer-related professional who writes codes for a wide range, from business software to games.
A)Software Tester
B)IT Manager
C)System Analyst
D)Computer Programmer
Answer: Im going to guess A
Explanation: I honestly don't know if its not correct please let me know eee
How much heat must be removed from 456 g of water at 25.
Which two characteristics are shared by all thunderstorms, tornados, and hurricanes? clouds and wind eyes and clouds warm, dry air and wind large waves and warm, dry air.
Answer:
Clouds and wind
Explanation:
A on EDGENUNITY
Clouds and wind eyes are characteristics are shared by all thunderstorms.
What is Thunderstorms?A thunderstorm is a downpour of rain accompanied by thunder. Since lightning produces thunder, all thunderstorms contain lightning.
The afternoon and evening hours in the spring and summer are when thunderstorms are most likely to occur, however they can happen at any time of day.
The majority of thunderstorms happen in the afternoon in the Gulf Coast and throughout the southeastern and western regions. In the Plains states, thunderstorms usually develop in the late afternoon and at night.
Therefore, Clouds and wind eyes are characteristics are shared by all thunderstorms.
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The chart shows shared characteristics of three different species. Which organisms are most closely related? species a and b species a and c species b and c species c and d.
Answer:
B and C are the correct ones.
Answer:
b and c
Explanation:
Alyssa is 12 years older than her sister, bethany. The sum of their ages is 44. Find their ages.
How does douglass appeal to the audience’s sense of logic in the excerpt? by using his own personal experiences to gain their trust by recounting emotional events to evoke sadness by explaining the reasoning behind his argument by describing how he plans to effect change in the us.
Answer:
Explanation:
need help
Answer:
B. by recounting emotional events to evoke sadness
Explanation: I got it right