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Lina20 [59]
3 years ago
5

Why phenolphthalein is used in experiment?

Chemistry
1 answer:
Dominik [7]3 years ago
4 0
In an acid-base titration, the neutralization reaction between the acid and base can be measured with either a color indicator or a pH meter. In this experiment, aphenolphthalein<span> color indicator will be </span>used<span>.
 </span>Phenolphthalein<span> is colorless in acidic solutions and pink in basic solutions.
Hope this helped 
: )</span>
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For scientific notation, when i move the decimal to the left the the exponent get bigger or smaller?
xeze [42]
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3 0
3 years ago
You dissolve 14 g of Mg(NO3)2 in water and dilute to
mart [117]

Answer:

0.127M

Explanation:

Molarity of a solution = number of moles (n) ÷ volume (V)

Molar mass of Mg(NO3)2 = 24 + (14 + 16(3)}2

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= 148g/mol

Using the formula, mole = mass/molar mass, to convert mass of Mg(NO3)2 to mole

mole = 14g ÷ 148g/mol

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Volume = 750mL = 750/1000 = 0.75L

Molarity = 0.095mol ÷ 0.75L

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mojhsa [17]
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Which graph shows the pressure-temperature relationship for a gas at a fixed volume?
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