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Aleksandr-060686 [28]
3 years ago
11

Which segement of the heating curve shown above represents an increase in the potential energy, but no change in the kinetic ene

rgy?
a. RS
b. TU
c. QR
d. PQ

Chemistry
2 answers:
Oliga [24]3 years ago
6 0
The answer is RS. Hope this helps!
Lisa [10]3 years ago
5 0
RS because it is moving but not a lot
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When you have finished adding the necessary amount of NaOH to your beaker, what color will the litmus paper turn?
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<u>Answer:</u> The red litmus paper turns blue on dipping in NaOH solution.

<u>Explanation:</u>

Litmus paper is the indicator that detects the nature of the solution, whether it is acidic or basic.

There are 2 types of litmus paper:

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NaOH is a strong base, so when a red litmus paper is dipped in the beaker having necessary amount of NaOH, the red litmus paper turns into blue.

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Answer:

2.881x10^23 atoms

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Therefore 1mole of Fe contains 6.02x10^23 atoms.

Molar Mass of Fe = 56g/mol

56g of Fe contains 6.02x10^23 atoms.

Therefore, 26.8g of Fe will contain = (26.8x6.02x10^23) / 56 = 2.881x10^23 atoms

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In qualitative analysis is a common to add the base in drops and then in excess. When added in drops, the metal hydroxide is formed. This metal hydroxide is often insoluble.

After this metal hydroxide is formed, the base could be added in excess such that the metal hydroxide dissolves in the excess base by forming a complex.

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Cu(OH)2(s) + 2OH^-(aq) -------> [Cu(OH)4]^2+(aq)

Learn more: brainly.com/question/1527403

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