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NeX [460]
3 years ago
8

When balancing a redox reaction, you are balancing

Chemistry
2 answers:
marshall27 [118]3 years ago
5 0
Hope this helped you :)
prisoha [69]3 years ago
4 0

Answer:

D. Both A and C

Explanation:

When balancing a redox equation, you'll first of all check for the oxidation equation, balance the number of moles and then the charges and move next to reduction equation and do the same. Then add up both half-equations to give the overall redox equation. The subscripts on each molecule isn't really required separately since they'll be balanced during the half equations.

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What is the pH of a solution with a hydrogen ion concentration of 4.5 x<br> 10-6 M ?
Fittoniya [83]

Answer:

<h2>5.35 </h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

We have

pH =  -  log(4.5 \times  {10}^{ - 6} )  \\  = 5.346787...

We have the final answer as

<h3>5.35 </h3>

Hope this helps you

6 0
2 years ago
How many moles of electrons are required to reduce one mole of MnO4- to one mole of Mn2+? (2 points)
Dafna1 [17]
The answer would be 6 e-. This is becuase you are turning a charge of -4 into a +2. In order to do this, you transfer 4 electrons for a neutral charge, and an additional 2 for a charge of +2.

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8 0
2 years ago
0.00099989<br> 3 sig figs, scientific notation
mixas84 [53]
1.00*10^3
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5 0
3 years ago
To help relieve heartburn, a person should take medicine that is
Sav [38]

Prescribed to you by your doctor.

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3 0
3 years ago
Read 2 more answers
what is the concentration in ppm of a solution which is prepared by dissolving in 15mg of nacl in 200ml water
bezimeni [28]

Answer:

Explanation:

In weight/volume (w/v) terms,

   1 ppm = 1g m-3 = 1 mg L-1 = 1 μg mL-1

200 mL = 0.2 L

15 / 0.2 mg L-1 =75 ppm

6 0
3 years ago
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