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.
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yes they are I studied for two whole days like non stop its stressful
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Tennis players are not allowed to swear when they are playing in Wimbledon - True
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TRUEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
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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.
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
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Answer:
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Answer:
A book review is a guide for potential readers. In a concise manner, a review summarizes the author's qualifications and main points, often providing examples from the text. A review also provides an opinion on whether the author succeeds or not in convincing readers of his or her points.
Explanation:
No explanation
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Answer:
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Explanation:
which of the following countries would you expect to have the densest population
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Answer:
You didn't give any countries.
Explanation:
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.
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Answer:
x=52.22m
Explanation:
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.
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Therefore option A is correct.
Know more about astronomical observations:
https://brainly.com/question/32394164
#SPJ3
Please help!! Due tonight! Will give brainliest to a HELPFUL ANSWER!
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Answer:
pro
Explanation:
pro
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Answer:
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Answers
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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.
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and Garibaldi have criticized each
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Answer:
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Answer Bank:
Wording of question
Nonresponse
Undercoverage
Voluntary Response
Answers
Answer:
A. undercoverage
B. Undercoverage, nonresponse
C. Voluntary response, undercoverage
D. Wording of question
Explanation:
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Answer:
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C) These theories are difficult to test for determining objective, scientific results regarding personality.
D) These theories put too much emphasis on the influence of society on personality.
Answers
Answer:
Limitations. The psychodynamic approach places too much emphasis on the psychological factors, without considering the biological/genetic factors that influence and contribute to mental health problems.
Limitation of the psychodynamics theory.
The psychodynamics theory is one that is criticized for being scientific and Unfaisable and it's not possible to prove the theory is false. Most of the Sigmund Freud theories are based on these aspects of Psychonomic analysis as the research has different therapy and is difficult to maintain as there is no way research can approach the unconscious mind.
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brainly.com/question/19490551.
Which one is it ?? Please help lollll
Answers
if so options 1 & 3 if not it’s just 3
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Answers
Answer:
[tex]{ \rm{28.2\% = \frac{141}{500} = 0.282 }} \\ [/tex]
Answer:
Decimal=0.282
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Answers
Answer:
convert 11.5 kg into grams
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Answers
Answer:
Explanation:
Is rebirth and reincarnation the same?
Reincarnation is re-embodiment of the same soul but in a different body. On the other hand, rebirth is the state of being born again or taking another birth. This is the main difference between the two words. Reincarnation usually refers to the rebirth of the same person at a different place after death.
hope this helps.
Answer:
reincarnation
Explanation:
because if you die you can reincarnate as a animal or any creature
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Answer:
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Explanation:
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Answer:
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Answer:
Hong Kong ranks number 104 in the list of countries (and dependencies) by population. The population density in China, Hong Kong SAR is 7140 per Km2 (18,492 people per mi2).