3 years ago

If a candle is burning in an open room, which reactant is in excess?

Chemistry

1 answer:

LenKa [72]3 years ago

3 0

Answer:

Explanation:

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A scientist would like to make 450.0 mL of a 0.0200 M HCl by diluting a 7.00 M HCl solution. What volume of the 7.00 M HCl solut

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What contribution did Niels Bohr make to atomic theory?

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Explanation

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In addition to reacting with gold (see Problem 21.21), aqua regia is used to bring other precious metals into solution. Balance

suter [353]

Aqua regia is used to bring precious metals into the solution .

$3Pt(s)+ 4NO^{-} _{3} (aq)+18 Cl^{-} (aq) +16H^{+} =3Pt Cl^{2-} _{6} (aq) +4NO(g) +8 H_{2} O$

This is the balanced reaction of Pt (platinum) .

<h3>What is aqua regia ?</h3>

It is a mixture of concentrated nitric acid and hydrochloric acid .there is three part of concentrated HCl and 1 part of concentrated nitric acid .

it is red or yellowish liquid . it is extremely corrosive and can cause skin burns . it is frequently used to dissolve gold and platinum .

The equation of reaction of aqua regia with gold :

$Au + 4H^{+} +NO^{-} _{3} +4Cl^{-} =AuCl^{-} _{4} +NO +2H_{2} O$

Learn more about aqua regia here :

brainly.com/question/12982022

#SPJ4

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2 years ago

When you drain the solution from the bottom, the concentration will:

djverab [1.8K]

.Answer:

stay the same the conc. of a solution is the same throughout the liquid

Explanation:

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