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xxTIMURxx [149]
4 years ago
14

A piece of iron is heated and then cooled by dropping it in water. The heat lost by the piece would be higher if

Chemistry
2 answers:
pickupchik [31]4 years ago
3 0
The water was cooler.
Firlakuza [10]4 years ago
3 0

the initial temperature is raised and the final temperature is lowered by 10 c

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Calculate the molarity of a NaOH solution that is prepared by diluting 100mL of 0.20M NaOH with 150mL of H2O.
lianna [129]

Molarity of solution = 0.08 M

<h3>Further explanation  </h3>

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution  

\tt M=\dfrac{n}{V}  

Where  

M = Molarity  

n = number of moles of solute  

V = Volume of solution  

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\tt mol=0.2~M\times 100~ml=20~mlmol=0.02~mol

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Volume of solution = 100 ml + 150 ml = 250 ml

\tt M=\dfrac{0.02~mol}{0.250~L}=0.08

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