Please help!! Due tonight! Will give brainliest to a HELPFUL ANSWER!
Answers
Answer:
mass of sample, M = 1.2359g
mass of CO2, mCO2 = 2.241g
mass of H, mH = 0.0648g
Since the compound is an organic compound,
when organic cpd is combusted it releases CO2 and H2O and NO2.
i) Mass of C, mC = unknown
CO2 molar mass, MCO2 = 44g/mol
C molar mass, MC = 12g/mol
mC = mCO2 × MC
MCO2
mC = 2.241g × 12g of C
44g of CO2
mC = 0.61g of C
C% = 49.36%
ii) mass percent of N = 28.84% of N
mass of N, mN = unknown
NO2 molar mass, MNO2 = 46g/mol
N molar mass, MN = 14g/mol
mN% = mN
M
where, M is mass of the sample.
mN = mN% × M
mN = 28.84% × 1.2359g
mN = 0.356g
iii) mass of O, mO = unknown
mass of sample = mC + mN + mO + mH
1.2359g = 0.61g + 0.356g + mO + 0.0648g
mO = 1.2359g - 1.0308g
mO = 0.2051g
O% = 16.56%
H% = 5.24%
iv) Empirical formula,
Element | C | H | N | O |
% |49.36%|5.24%|28.84%|16.56% |
A. M| 12 | 2 | 14 | 16 |
|49.36/12| 5.24/2 | 28.84/14 | 16.56/1|
n= |C= 4.1 | H= 2.6 |N= 2.1 |O= 1|
A.R |C=4.1|H=2.6|N=2.1|O=1|
Simplest | 4 | 3 | 2 | 1|
ratio
C4H3N20 is the empirical formula.
n = number of moles and at A. R is atomic ratio and I divided by smallest number of moles.
A. M = atomic mass.
Related Questions
type of notation and what they showed
Answers
Answer:
Big-O Notation,Omega Notation,Theta Notation
Explanation:
Big O notation specifically describes worst case scenario.
Omega(Ω) notation specifically describes best case scenario.
Theta notation represents the average complexity of an algorithm.
why were most slaves in the atlantic system taken from west and central africa
Answers
Answer:
West Central Africa
The majority of all people enslaved in the New World came from West Central Africa. Before 1519, all Africans carried into the Atlantic disembarked at Old World ports, mainly Europe and the offshore Atlantic islands.
how does bluish respond when dreenie calls her bluish ? how does dreenie feel
Answers
Answer:
1.Why is the book called Bluish? What does the name mean to her classmates? To Dreenie? Is it derogatory? Do you think it is right to call Natalie, Bluish? Would you want a name like this?2.Why does Bluish'smom respond negatively to the nickname "Bluish"?(Did you figure out the Black and Jewish connection before they told us in the book)3.Who was your favorite character and why?4.What did you like best and least about the book?5.Were there any words you didn’tunderstand? If so what were they and did you look them up? a.Throngs –a large number6.What is a Magnet School?It is a public school offering special instruction and programs not available elsewhere, designed to attract a more diverse student body from throughout a school district. But over the last 20 years or so, some Magnet schools have taken on an a more competitive aspect in that they can only fill 10-20% of the students that apply to attend school on their campuses. The current role of Magnet schools, therefore, can often promote academic opportunity and excellence over their regular counterparts. Magnet schools often attract “gifted” students who score well in tests and receive good grades (about 1/3 of all Magnet schools use selection criteria to decide who they’ll invite to enroll for that year).7.What is the exact nature of Bluish's illness?8.How does Dreenie feel about Bluish and her condition? How does the rest of the class respond?9.Why does Bluish say, “I’m sitting right here until they look at me?”10.Have you known someone who had cancer? Were you afraid you would “catch” it if you were around them? 11.What is Dreenie's theory for why Tuli acts the way she does, with her fake Spanish and flamboyant mannerisms; (Lonely, no Mom) Do you think she is Spanish? (12.Dreenie thinks Tuli is needy and jealous? Do you have friends like that? What is the best way to deal with them?13.How would you describe each main character? a.Dreenie –caring and concernedb.Tuli –dramatic and funnyc.Bluish –courageous and perseveringd.Why does Willie call Dreenie –drain? Is it mean?14.Dreenie is only 10 and taking care of so many people. How do you think that would feel?15.What do you notice about the language that Willie uses? “I know who your Mama ain’t”16.How would you describe the neighborhoods they live in –their cultural, economic and family situations?
Explanation:
Ano ang magiging epekto sa ekonomiya ng isang bansa kung ito ay salat sa likas na yaman
Answers
how can you show appreciation for the arts of calabarzon and bicol region
Answers
One can show appreciation for the arts of the Calabarzon and Bicol region by showing respect and admiration for their arts.
Art is the expression of human creative skill in a visual form such as sculpture, painting, or producing works to be appreciated primarily for their beauty. Art can include literature, dance, painting, music, etc.
Some of the arts of the Calabarzon and Bicol region include the pinya fabric. This was used for wedding gowns and formal attire. Pinya fabric was made from pineapple fibers. Some other arts include ukit, higantes, etc.
One can show appreciation for the arts of the Calabarzon and Bicol region by showing respect and admiring their arts.
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What are pictures of the different type of tools to use in space and what do they use it for
Answers
Answer:
Tools to use in space:
•Earth-based Observations
•Airborne and Orbital Telescapes
•Probes and Fly-by Spacecraft
•Orbiters
•Landers
•Rovers
•Sample Return
what shifts in survivor ship curves would you expect to see if environmental problems worsen and polluted related diseases increase?
Answers
Besides the constraint of the general life history strategy of a species, the shape of survivorship curves can be affected by both biotic and abiotic factors, such as competition and temperature.
Random question! trying to calm down after life today!
does anyone else's cat steal your desk?! who else has a cat? and if you don't then do you like cats? what bread is your favorite?
Answers
Answer: I‘m allergic to cats but I love them all lol
Answer:i like cats and wheat or white bread is my facorite
Explanation: because can be cute or fricking demons
PLEASE HELP WILL GIVE BRAINLY!!!!!!
How has the use of the term "serial killer" changed in our society?
Answers
Answer:
Technology, proximity and mobility of both victims and killers has changed over time. Of course, the car became a huge part of serial killing. Now we have the internet, so stalking and selecting targets online is a recent innovation. ... Technology moves along with serial homicide
Explanation:
convert 11.5kg into grams
Answers
Answer:
convert 11.5 kg into grams
11500 grams
true or false
Tennis players are not allowed to swear when they are playing in Wimbledon
Answers
Tennis players are not allowed to swear when they are playing in Wimbledon - True
Answer:
TRUEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Explanation:
According to this population pyramid, what current social issue is MOST LIKELY to be a concern to the government?
A) Uneven distribution of men and women in the 55–65 age demographic
B) Lack of workers to support the economy
C) High infant mortality rates
D) Access to jobs and resources for the 20–35 age demographic
E) Housing for the 70–75 age demographic
Answers
Answer:
B
Explanation:
I'd say B because it's likely the only thing the government would care about. They wouldn't care about deaths, as long as there was someone to do the jobs they don't want to.
Members of the baby-boom generation- people born between 1946 and 1964- constitute nearly 1/3 of the US population. Baby boomers have received more education than their parents, and women from this generation were more likely to enter the labor force than women before them. The baby boomers have delayed marriage and parenthood and have fewer children compared to their parents. They are more likely to divorce, bear children while unmarried and to cohabitate. As they grow older, what impact will baby boomers have on the American population in the years ahead?
Answers
Answer:
The population of the baby boomers will grow in the years.
Explanation:
Meaning almost all the population will have received more education than their parents, and women of the generation were more likely to enter the labor force than women before them. The baby boomers have delayed marriage and parenthood and have fewer children compared to their parents. They are more likely to divorce, bear children while unmarried and to cohabitate.
Make me Brainlist.
What is another name the Russian character is referred to as? Why is this name used? What does the reference to this name symbolize? The heart of darkness
Answers
Answer:
a commie
Explanation:
the name is used because Russia invented communism. it symbolizes communism? heart of darkness... what???
Which of the following best describes the author's purpose in the passage?
(A
To provide detailed descriptions of the instruments used at the Maragha and Tabriz observatories
(В
To evaluate the importance of the astronomical discoveries made by Ilkhanid scientists
C
To portray his patron as a generous supporter of the sciences and a man of unusual intelligence
D
To criticize Ghazan for his vanity and remind him to focus on religious and spiritual pursuits
Answers
Answer:
A
Explanation:
Because it helps us understand
To provide detailed descriptions of the instruments used at the Maragha and Tabriz observatories. Therefore option A is correct.
The passage primarily focuses on describing the various instruments utilized in the Maragha and Tabriz observatories during the Ilkhanid period.
The author discusses the massive astrolabe, the azimuth quadrant, and the equatorial ring, providing detailed information about their construction and usage in astronomical observations.
While the passage may touch upon the achievements of Ilkhanid scientists, it does so in the context of showcasing the precision and innovation of the instruments.
The purpose of the passage is not to evaluate the importance of the discoveries or criticize Ghazan but rather to offer insights into the advanced astronomical tools developed during that historical era.
Therefore option A is correct.
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Intensity is to brightness as wavelength is toa. accommodation.b. frequency.c. amplitude.d. hue.e. disparity.
Answers
Intensity is to brightness as wavelength is to: d. hue
Psychology refers to the scientific study of both the consciousness and unconsciousness of the human mind based on feelings, emotions and thoughts, so as to better understand how the mind functions and affect human behaviors in contextual terms.
In Psychology, intensity relates to the brightness of light in the visible-light spectrum while wavelength describes the level of its hue.
Generally, the wavelength at which energy output from a particular source is greatest within the visible-light spectrum is generally referred to as hue.
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Logic gate
Y = 1 if (A = 0 AND B = 0) AND (B = 0 OR C = 1)
Please help, please help mee
Answers
Answer:
Wait, i will answer this later
Explanation:
Wait for my idea okay?
ano mahahalagang naimbag ng kabihasnang roman sa daigdig
Answers
Answer:
art, artiktura, palasyo, na walang basehan at abukay church
Please help I been getting bots lol I need help asap <3 thanks
Answers
A researcher is trying to determine whether a new painkilling medicine is effective in reducing headaches. Twenty adult participants sit in a noisy environment for 30 minutes and then rate the severity of their headaches on a scale from 0 (none) to 5 (intense). Group M (the medicine group) receives a normal dose of the medicine. Group C (the control group) rests quietly. After 20 minutes, all participants again complete the headache rating scale. The statistically significant differences in headache severity on the posttest appear in the graph below.
Which of the following statements is supported by the results of this experiment?
Answers
Answer:
THE MEDICINE
Explanation:
The medicine, remember independent variable which causes a change in behavior.
What is an independent variable?In an experiment or study, an independent variable is a variable that the researcher modifies or alters in order to examine the impact on the dependent variable. To ascertain its effect on the dependent variable, the variable is tested or researched.
In other terms, an independent variable is a variable in the experiment or study that is not affected by any other factors. It is typically indicated by the letter "X" and is what changes or impacts the dependent variable.
For instance, the amount of fertilizer put to the soil would be the manipulated variable in an experiment to determine the impact of fertilizer on plant development.
Therefore, the medicine, remember independent variable which causes a change in behavior.
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if you want to train your dog to do a complicated trick,like rolling over and playing dead, the best operant conditioning technique you could use would be
Answers
Answer:
if you want to train your dog to do a complicated trick,like rolling over and playing dead, the best operant conditioning technique you could use would be SHAPING
Answer:
repeation and milestones...
take it slow nd build up, baby steps in other words
a quarterback throws a pass at an angle of 35 degrees above the horizontal with an initial speed of 25 m/s. The ball is caught by the receiver 2.55 seconds later. Determine the distance the ball was thrown.
Answers
Answer:
x=52.22m
Explanation:
Explain one way in which trade affected the environment during the period 1200-1450
Answers
Answer: Facilitated the transmission of disease
Explanation:
For example The Mongols were all about expanding. When they were taking over other empires and civilizations they were spreading the fleas that harbored the disease.
MAPEH - The one who answer will be brainliest
Please Answer now.
Music Thank you
Answers
What “powers” do the powerful Supreme Court justices have? (List and describe 3 powers)
Answers
Bindi is taking dual enrollment courses. How might this benefit her when she goes to college?
It will show the college her time management and leadership skills.
She will have college credits before she starts her first semester.
She will be prepared to pass the same courses again in her first semester.
Answers
Answer:
She will have college credits before she starts her first semester
Explanation:
When you take dual enrollment, you take college classes in high school, so that you have less classes to take when you actually go to college.
Hope this helps! Have an amazing day :)
Answer:
B
Explanation:
Solve for a -3(7a+5)=27
Answers
Explanation:
distribute the -3 to 7a +5 which equals -10a -15=27. Then add 15 to both sides to get -10a =42them divide -10 on both sides. Which equals -4.2.
what is 28.2% as a decimal and fraction
Answers
Answer:
[tex]{ \rm{28.2\% = \frac{141}{500} = 0.282 }} \\ [/tex]
Answer:
Decimal=0.282
Fraction=141/500
Please help!! Due tonight! Will give brainliest to a HELPFUL ANSWER!
Answers
Answer:
pro
Explanation:
pro
Which of the following is NOT one of the strategies utilized by the Counter Reformation?
Answers
Answer:
COUNCIL OF TRENT
Explanation: