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Alex777 [14]
4 years ago
8

enny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny do

next to determine the pH of her solution?
Chemistry
1 answer:
Svetllana [295]4 years ago
8 0
Compare it to the chart showing how base or acidic a substance is
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Use the titration results to calculate the moles of h2so4
Aloiza [94]
Missing in your question: the molarity of H2SO4 M = 0.1 M
and the equivalence point (mL) = 19.31 mL = 0.019 L
So by using the molarity formula:

molarity of H2SO4 = no of moles of H2SO4 / Volume L

So by substitution:
0.1 M = no of moles of H2SO4  /  0.019 L
∴ no of moles of H2SO4 = 0.1 M * 0.019 L
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4 0
3 years ago
or the solution containing Zn2+(aq), n is 2, so the MM/n ratio will be the molar mass of Zn divided by 2: MM/n = (65.39 g/mol) /
yKpoI14uk [10]

Answer:

MM/n will be less than the theoretical value

Explanation:

Provided that

The plating efficiency is proportional to the element weight

i.e.

\frac{Zn^2}{(aq)}

That represents \frac{MM}{n\ value}

So,

MM by N value is

= 65.39 g /mol ÷ 2

= 32.70 g/mol

Also, the experimental plating value is 0.55 that represents that it is much lesser than the normal value

So it would be concluded that the MM by N would be lower than the theoretical value

4 0
3 years ago
What happens when light passes from air into water?
vesna_86 [32]
The answer is C . when the light slows down
3 0
3 years ago
Match the following parts of an atom to their description.
Burka [1]

Answer:

Neutron - non charged particle in nucleus

nucleus - composed of proton and Neutron

electron - negatively charged particle that moves around the nucleus

proton - positively charged particle in the nucleus.

Explanation:

these the are definitions of the terms

5 0
3 years ago
A student pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. She
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Answer:

It will go faster each time because she is stirring therefore the water can get to the salt faster than it just sitting at the top

Explanation:

6 0
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