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
Sonbull [250]
3 years ago
8

In a redux reaction why does an element oxidation number decreases

Chemistry
1 answer:
Olin [163]3 years ago
7 0

Answer:

Decreases

Explanation:

An element's oxidation number decreases because it gained electrons.

You might be interested in
A metal coin has certain properties that can be measured if the coin were to go from earth to moon the coins will remain the sam
PtichkaEL [24]

Answer:

its matter

Explanation:

6 0
3 years ago
PLS HELPP DUE TODAY NEED DONE
Zarrin [17]

Answer:

Explanation:

Each coil increases it by a multiple of 100.

=> 50 | 3 | <u><em>15,000</em></u>

=> 100 | 3 | <u><em>30,000</em></u>

=> 150 | 3 | <u><em>45,000</em></u>

3 0
2 years ago
Read 2 more answers
At a certain temperature the vapor pressure of pure thiophene is measured to be . Suppose a solution is prepared by mixing of th
Lesechka [4]

Answer:

0.35 atm

Explanation:

It seems the question is incomplete. But an internet search shows me these values for the question:

" At a certain temperature the vapor pressure of pure thiophene (C₄H₄S) is measured to be 0.60 atm. Suppose a solution is prepared by mixing 137. g of thiophene and 111. g of heptane (C₇H₁₆). Calculate the partial pressure of thiophene vapor above this solution. Be sure your answer has the correct number of significant digits. Note for advanced students: you may assume the solution is ideal."

Keep in mind that if the values in your question are different, your answer will be different too. <em>However the methodology will remain the same.</em>

First we <u>calculate the moles of thiophene and heptane</u>, using their molar mass:

  • 137 g thiophene ÷ 84.14 g/mol = 1.63 moles thiophene
  • 111 g heptane ÷ 100 g/mol = 1.11 moles heptane

Total number of moles = 1.63 + 1.11 = 2.74 moles

The<u> mole fraction of thiophene</u> is:

  • 1.63 / 2.74 = 0.59

Finally, the <u>partial pressure of thiophene vapor is</u>:

Partial pressure = Mole Fraction * Vapor pressure of Pure Thiophene

  • Partial Pressure = 0.59 * 0.60 atm
  • Pp = 0.35 atm

3 0
3 years ago
A plastic cup is filled with 15.5 grams of water. The cup is sealed and placed in the freezer. The water freezes and turns to ic
Travka [436]
C.
This is because the water has undergone a physical change meaning that the effects can be reversed. If nothing was added or lost from the water the ice would be the exact same weight.
3 0
4 years ago
Read 2 more answers
PLEASE HELP<br><br> is this a chemical or physical change???
skad [1K]

Answer:

Chemical, cause physical are changes affecting the form of a chemical substance, but not its chemical composition. This doesn't affect the substance but the composition.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is most dense chlorine or oxygen bromine silver
    15·1 answer
  • The experiment above is repeated, but instead of extracting once with 6 mL the extraction is done three times with 2 mL of dichl
    11·1 answer
  • A test tube can be used to hold
    7·1 answer
  • What is the molar mass for N5O9
    7·1 answer
  • Which of the following combinations of information would allow you to calculate concentration in ppmv? Check all that apply. mol
    6·1 answer
  • Which of the following would be more reactive than magnesium (MG)
    11·1 answer
  • How much does Suitcase weight if it has a mass of 22.5kg
    13·1 answer
  • Can someone help me with this
    13·1 answer
  • Explain why the middle portion of ship shows more rust than either the top most or the bottom most part ​
    9·1 answer
  • Which of the following is the best way to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!