1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
attashe74 [19]
3 years ago
5

Which mass of urea, CO(NH2)2, contains the same mass of nitrogen as 101.1g of potassium nitrate?

Chemistry
1 answer:
Effectus [21]3 years ago
4 0
In order to calculate the mass of nitrogen, we must first calculate the mass percentage of nitrogen in potassium nitrate. This is:
% nitrogen = mass of nitrogen / mass of potassium nitrate
% nitrogen = 14 / 101.1 x 100

The mass of nitrogen = % nitrogen x sample mass
= (14 / 101.1) x 101.1
= 14 grams

The molar weight of nitrogen is 14. Each mole of urea contains two moles of nitrogen. Therefore, for there to be 14 grams of nitrogen, there must be 0.5 moles of urea.
Mass of urea = moles urea x molecular weight urea
Mass of urea = 0.5 x 66.06
Mass of urea = 33.03 grams
You might be interested in
What did Ernest Rutherford discover? How was his model different from Thomson’s?
s2008m [1.1K]

Answer:

thomson developed the chocolate chip method which was the identification of the electrons in the core of an atom.  Rutherford discovered that the core was only positive and that the electrons were floating outside of the core.

Explanation:

4 0
3 years ago
Why our body is not crushed due to atmostsparic pressure​
kirill [66]
Fluid and air flows around you and tries to crush you in but Fortunately, there is typically just as much pressure inside your body pressing outward as there is air pressure outside your body pushing inward. They typically cancel out, meaning that there is no overall force on you and you don't get crushed.
7 0
3 years ago
Someone help answer this
alexandr402 [8]

it is water energy :) this is easy

6 0
3 years ago
Read 2 more answers
Using GRIGNARDS REAGENT convert methane to ethanol
slamgirl [31]

Answer:

J

Explanation:

6 0
3 years ago
Describe how a new drilling site off the coast of Alaska would be analyzed.
sveta [45]

Answer:

Explanation:

ポイントをありがとう

6 0
3 years ago
Other questions:
  • Which choice below correctly completes the sentence? _______ reaches the Earth's surface through _______, then turns into ______
    10·1 answer
  • HELP PLS!
    13·1 answer
  • Why can't helium bond with hydrogen?
    13·1 answer
  • In a molecule of PCl3, 6 electrons will form
    9·1 answer
  • Which elements can form acidic compounds? ​
    6·2 answers
  • What would happen if they had no sunlight???
    5·2 answers
  • How is a planet different from a moon? (2 points)
    12·1 answer
  • An ionic bond forms between what two types of atoms?
    6·1 answer
  • 23g of of sodium reacted with 35.5g of chlorine. calculate the mass of the sodium chloride compound formed
    11·1 answer
  • Which elements are present in all organic compounds? 1. Hydrogen and oxygen 2. Nitrogen and Carbon 3. Nitrogen and oxygen 4. Hyd
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!