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ryzh [129]
3 years ago
5

Which statement represents this diagram? A. A given substance can either change its state or change its temperature, but not bot

h at the same
time.
B. Temperature is always changing while a substance changes from one state to another.
C. A given substance can change its state at any temperature.
D. The energy being added can be used to change the temperature or the state of matter at the same
time.

Chemistry
1 answer:
julsineya [31]3 years ago
3 0

Answer:

temperature is always changing whiles a substance changes from one State to another

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A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
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Answer:

0.0611M of HNO3

Explanation:

<em>The concentration of the NaOH solution must be 0.1198M</em>

<em />

The reaction of NaOH with HNO3 is:

NaOH + HNO3 → NaNO3 + H2O

<em>1 mole of NaOH reacts per mole of HNO3.</em>

That means the moles of NaOH used in the titration are equal to moles of HNO3.

<em>Moles HNO3:</em>

12.75mL = 0.01275L * (0.1198mol / L) = 0.0015274 moles NaOH = Moles HNO3.

In 25.00mL = 0.025L -The volume of the aliquot-:

0.00153 moles HNO3 / 0.025L =

<h3> 0.0611M of HNO3</h3>
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