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alexdok [17]
3 years ago
6

Which question would be scientifically reasonable for a student to ask about the layers of the Earth?

Chemistry
1 answer:
lubasha [3.4K]3 years ago
5 0

Answer:

The answer is C

Explanation:

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A compound with a formula mass of 42.08 amu is found to be 85.64 carbon and 14.36 hydrogen by mass find its molecular formula
Mars2501 [29]
brainly.com/question/8489178#respond
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Complete the table. Please help
Anika [276]
Propane: 3 carbon, 8 hydrogen Carbon dioxide: 1 carbon, 2 oxygen
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3 years ago
Question 5 options: The cell potential for an electrochemical cell with a Zn, Zn2 half-cell and an Al, Al3 half-cell is _____ V.
Mashcka [7]

Answer:

The voltage is  E_{cell} =  0.944 \ V

Explanation:

Generally the half reaction for Zn, Zn2 half-cell is mathematically represented as

    Zn_{(s)}   ⇔   Zn^{2+}_{ (aq)} + 2e^-    (reference study academy)

and the electric potential for this is a constant value

     E_{zn } =  -0.7618 \ V

Generally the half reaction for Al, Al3 half-cell is mathematically represented as

      Al^{3+}  _{(aq)} + 3e^-  ⇔  Al_{(s)}

and the electric potential for this is constant value  

       E_{Al  } =  -1.662 \ V

Therefore the cell potential for an electrochemical cell  is mathematically represented as

          E_{cell} =  E_{zn }  -  E_{Al }

substituting values

         E_{cell} =  -0.718  - (-1.662)

        E_{cell} =  0.944 \ V

 

4 0
3 years ago
Which of the following are not molecules?<br> A. MgCl₂<br> B. C₃H₈<br> C. Al<br> D. NaCl<br> E. Ag
xxMikexx [17]

Answer:

C.Al & E. Ag

Explanation:

These two are elements. Meaning tget are substances that cannot be broken down because they are pure. The others are considered molecules due to their ability to be broken down.

5 0
3 years ago
What relationship can you see between the mass and the volume of an object
notsponge [240]

If the ratio of mass to volume is higher, then density is higher. If the ratio of mass to volume is lower, the density is lower.

4 0
3 years ago
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