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
Salsk061 [2.6K]
3 years ago
10

Water and phosphorus with a total mass of 200 grams are added to a flask like the one below and then the flask is sealed with a

rubber stopper. The flask is then heated up so that a reaction occurs but no gas from the reaction escapes the flask. How much mass would you expect to be in the flask after the reaction occurs
Chemistry
1 answer:
ohaa [14]3 years ago
8 0

Answer:

h20 o3vbjbxhnnhbnkknnchemesry

You might be interested in
From the relative rates of effusion of ²³⁵UF₆ and ²³⁸UF₆ , find the number of steps needed to produce a sample of the enriched f
Dafna11 [192]

The number of steps required to manufacture a sample of the 3.0 mole%  ²³⁵U enriched fuel used in many nuclear reactors from the relative rates of effusion of ²³⁵UF₆ and ²³⁸UF₆. ²³⁵U occurs naturally in an abundance of 0.72% are :  mining, milling, conversion, enrichment, fuel fabrication and electricity generation.

<h3>What is Uranium abundance ? </h3>
  • The majority of the 500 commercial nuclear power reactors that are currently in operation or being built across the world need their fuel to be enriched in the U-235 isotope.
  • This enrichment is done commercially using centrifuges filled with gaseous uranium.
  • A laser-excitation-based method is being developed in Australia.
  • Uranium oxide needs to be changed into a fluoride before enrichment so that it can be treated as a gas at low temperature.
  • Uranium enrichment is a delicate technology from the perspective of non-proliferation and needs to be subject to strict international regulation. The capacity for world enrichment is vastly overbuilt.

The two isotopes of uranium that are most commonly found in nature are U-235 and U-238. The 'fission' or breaking of the U-235 atoms, which releases energy in the form of heat, is how nuclear reactors generate energy. The primary fissile isotope of uranium is U-235.

The U-235 isotope makes up 0.7% of naturally occurring uranium. The U-238 isotope, which has a small direct contribution to the fission process, makes up the majority of the remaining 99.3%. (though it does so indirectly by the formation of fissile isotopes of plutonium). A physical procedure called isotope separation is used to concentrate (or "enrich") one isotope in comparison to others. The majority of reactors are light water reactors (of the PWR and BWR kinds) and need their fuel to have uranium enriched by 0.7% to 3-5% U-235.

There is some interest in increasing the level of enrichment to around 7%, and even over 20% for particular special power reactor fuels, as high-assay LEU (HALEU).

Although uranium-235 and uranium-238 are chemically identical, they have different physical characteristics, most notably mass. The U-235 atom has an atomic mass of 235 units due to its 92 protons and 143 neutrons in its nucleus. The U-238 nucleus has 146 neutrons—three more than the U-235 nucleus—in addition to its 92 protons, giving it a mass of 238 units.

The isotopes may be separated due to the mass difference between U-235 and U-238, which also makes it possible to "enrich" or raise the proportion of U-235. This slight mass difference is used, directly or indirectly, in all current and historical enrichment procedures.

Some reactors employ naturally occurring uranium as its fuel, such as the British Magnox and Canadian Candu reactors. (By contrast, to manufacture at least 90% U-235, uranium needed for nuclear bombs would need to be enriched in facilities created just for that purpose.)

Uranium oxide from the mine is first transformed into uranium hexafluoride in a separate conversion plant because enrichment operations need the metal to be in a gaseous state at a low temperature.

To know more about Effusion please click here : brainly.com/question/22359712

#SPJ4

7 0
2 years ago
How many hydrogen (H) atoms are in 1 molecule of (NH4)2S ?
Alex73 [517]
Im not sure but it could be 4 (H)
3 0
3 years ago
What is the molarity of 4 qof NaCl (MM=58.45) in 3,800 mL of solution?
tiny-mole [99]

Answer:

.018 M

Explanation:

grams/MM=ans./volume(L) = M

4/58.45=ans./3.8=.018 M

8 0
3 years ago
What are the purposes of theories in science?
Leto [7]

Answer:

Scientific theories are testable and make falsifiable predictions. They describe the causes of a particular natural phenomenon and are used to explain and predict aspects of the physical universe or specific areas of inquiry (for example, electricity, chemistry, and astronomy).

A good theory in the theoretical sense is (1) consistent with empirical observations; is (2) precise, (3) parsimonious, (4) explanatorily broad, and (5) falsifiable; and (6) promotes scientific progress (among others; Table 1.1).

5 0
3 years ago
Why do scientist use models to study atoms and molecules?
Nesterboy [21]
This allows us to visually see the structure of the atoms/ molecules so we can get a better understanding of what they look like.
6 0
3 years ago
Other questions:
  • What is a isotope ?
    15·2 answers
  • Vanillin (used to flavour vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest
    5·1 answer
  • An over-the-counter medicated foot powder contains camphor, eucalyptus oil, lemonoil, and zinc oxide. Only one of the ingredient
    5·1 answer
  • An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?
    7·1 answer
  • c)A 100mL graduated cylinder contained 25.6mL of water. A test tube full of water was emptied into the graduated cylinder. The w
    13·2 answers
  • Which is an acid-conjugate base pair?
    11·2 answers
  • Why are vitamins and minerals are not classified as a food?
    7·1 answer
  • What did Rutherford's gold foil experiment tell about the atom?​
    13·1 answer
  • The molar heat of vaporization for methane, CH4, is 8. 53 kJ/mol. How much energy is absorbed when 54. 8 g of methane vaporizes
    8·1 answer
  • 1. Which trait is most likely to be passed on to its organism’s offspring?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!