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
Licemer1 [7]
3 years ago
6

If the mole fraction of nitric acid (HNO3) in an aqueous solution is 0.275, what is the percent by mass of HNO3?

Chemistry
1 answer:
jeka943 years ago
8 0
Molar mass of    N    = 14 g/molMolar mass of   O2    = 32 g/molAdding both masses = 46 g/molActual molar mass/ Empirical molar mass = 138.02 / 46 = 3Now multiplying this co effecient with empirical fomula NO2 = 3(NO2)                                                                                             = N3O6So according to above explanation,D) N3O6, is the correct answer.

You might be interested in
Gamma, beta and alpha radiation are all alike because:
timama [110]
Alpha, beta and gamma radiation are all types of radiation that can be emitted from the nucleus of an atom. Apart from this they are different. Alpha radiation consists of a helium nucleus, beta radiation consists of an electron (or positron) and gamma radiation consists of very high energy electromagnetic radiation. 
8 0
3 years ago
In the 1800s, a popular belief known as vitalism stated that life processes could not be explained by the laws of physics and ch
soldi70 [24.7K]

The question is incomplete, the complete question is;

In the 1800s, a popular belief known as vitalism stated that life processes could not be explained by the laws of physics and chemistry,and were instead dictated by an independent life force. Which discovery most likely caused scientists to revise this hypothesis regarding the origin of life on Earth?

a. that inorganic compounds existed within live organisms

b. that organic compounds could be synthesized in a laboratory

c. that RNA could serve as a template to synthesize DNA

d. that self-replicating molecules existed inside cells

Answer:

b. that organic compounds could be synthesized in a laboratory

Explanation:

Vitalism is the belief that "living organisms are fundamentally different from non-living entities because they contain some non-physical element or are governed by different principles than are inanimate things"(wikipedia).

This theory held that the molecules involved in life processes could not be synthesized in the laboratory.

All these were upturned after Fredrich Whöler's synthesis of urea in 1828. He was able to show that molecules involved in life process can also be synthesized in the laboratory. This gave rise to modern synthetic organic chemistry.

6 0
3 years ago
Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?
anygoal [31]
Answer: Boiling chips provide surfaces on which bubbles can form as the liquid boils.

Hope this helps!
6 0
3 years ago
Someone plz plz answer this hurry plz it
ziro4ka [17]

Answer:

b

Explanation:

8 0
3 years ago
In which state of matter do particles have the least amount of energy
kogti [31]

Answer:

solid

Explanation:

8 0
3 years ago
Other questions:
  • The pka of the α-carboxyl group of glutamine is 2.17, and the pka of its α-amino group is 9.13. calculate the average net charge
    13·2 answers
  • The first eighteen chemical elements on the periodic table are described below in a series of statements. The first 1S letters o
    5·1 answer
  • How many moles of AlCl3 are in 2.25L of a 0.15 molar solution?
    8·1 answer
  • Given: glow is a find the indicated measure.​
    9·1 answer
  • ASAP , 8.81 g Carbon
    14·1 answer
  • Which formula represents a hydrocarbon with a double covalent bond?
    10·1 answer
  • 7.62 x 10^23 molecules of CO2 are contained in a tire. How large is the tire (in liters)?​
    7·1 answer
  • Need help with cemester​
    13·1 answer
  • PLEASE HELP ME ON THIS ​
    14·1 answer
  • What is the [H3O+] if the [OH-] is 1 x 10 -8?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!