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
solniwko [45]
3 years ago
11

Which percentage is in the appropriate range for a snack to be considered a “good source” of nutrients?

Chemistry
2 answers:
Ksju [112]3 years ago
7 0
I think 35 percent. Hope this helps!
alexandr402 [8]3 years ago
6 0

Answer:

15

Explanation:

You might be interested in
Use the following half-reactions to construct a voltaic cell:
velikii [3]

<u>Answer:</u> The correct answer is 3Ag^+(aq.)+Cr(s)\rightarrow 3Ag(s)+Cr^{3+}(aq.);E^o_{cell}=+1.53V

<u>Explanation:</u>

We are given:

Cr^{3+}(aq.)+3e^-\rightarrow Cr(s);E^o=-0.73V\\\\Ag^+(aq.)+e^-\rightarrow Ag(s);E^o=+0.80V

The substance having highest positive E^o potential will always get reduced and will undergo reduction reaction. Here, silver will always undergo reduction reaction will get reduced.

Chromium will undergo oxidation reaction and will get oxidized.

The half reactions for the above cell is:

Oxidation half reaction: Cr(s)\rightarrow Cr^{3+}+3e^-;E^o_{Cr^{3+}/Cr}=-0.73V

Reduction half reaction: Ag^{+}+e^-\rightarrow Ag(s);E^o_{Ag^{+}/Ag}=0.80V       ( × 3)

Net equation:  3Ag^+(aq.)+Cr(s)\rightarrow 3Ag(s)+Cr^{3+}(aq.)

Oxidation reaction occurs at anode and reduction reaction occurs at cathode.

To calculate the E^o_{cell} of the reaction, we use the equation:

E^o_{cell}=E^o_{cathode}-E^o_{anode}

Putting values in above equation, we get:

E^o_{cell}=0.80-(-0.73)=1.53V

Hence, the correct answer is 3Ag^+(aq.)+Cr(s)\rightarrow 3Ag(s)+Cr^{3+}(aq.);E^o_{cell}=+1.53V

4 0
3 years ago
I NEED HELP ASAP DON'T JUST ANSWER FOR POINTS OR YOU WILL GET REPORTED!
White raven [17]

Answer:

The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39.

Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.

Explanation:

7 0
2 years ago
Read 2 more answers
Is it true river flows from areas of low ground to areas of high ground​
melomori [17]
False, rivers tend to flow from high ground to low ground
5 0
3 years ago
Read 2 more answers
At which point is kinetic energy greatest
Nat2105 [25]

Answer:

x is wen

Explanation:

3 0
3 years ago
Read 2 more answers
Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 2/10
bixtya [17]

Answer: D.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which list of elements is arranged in order of increasing electronegativity?
    14·2 answers
  • The theater student talks about a type of theater from Japan called ___________.
    11·1 answer
  • Help;;;;;;;;;;;;;;;;;)
    6·2 answers
  • How Many atoms are in 1 mole of tantalum, Germanium, Rhodium, Nihonium?
    6·1 answer
  • Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation: Cr2O72− + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe
    12·1 answer
  • Can someone help please​
    7·2 answers
  • In each of the following indicate which reaction will occur faster. Explain your reasoning. (a) CH3CH2CH2CH2Br or CH3CH2CH2CH2I
    13·1 answer
  • Which material is not a metamorphic rock
    5·1 answer
  • What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?
    13·1 answer
  • An atom has the following electron configuration. 1s22s22p63s23p64s? How many valence electrons does this atom have? A: 2B: 3C:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!