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mina [271]
3 years ago
5

A solution contains 1.77g of dissolved silver. What mass of potassium chloride must be added to completely precipitate all of th

e silver?
Chemistry
1 answer:
Alex777 [14]3 years ago
6 0
<span>Ag++Clâ’→AgCl(s)âŹâ†“ We need to add over 1 g KCl. Moles of silver in solution = 1.77â‹…g107.87â‹…gâ‹…molâ’1` = 0.0164â‹…mol Clearly we need an equivalent quantity of chloride, thus we add a mass of potassium chloride = 0.0164â‹…molĂ—74.55â‹…gâ‹…molâ’1 = ??â‹…g The 1 equiv will precipitate most of the silver ion. Silver chloride will possess some aqueous solubility. The result is a curdy white precipitate of silver chloride.</span>
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The number 875000 written in scientific notation would be
babymother [125]

Answer:

8.75 x 10^5

Explanation:

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3 years ago
Which of the following includes the correct pairing of volcano and its formation? Cinder volcano; large, explosive eruptions Cin
Anarel [89]
The correct pairing of the volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions. In addition to that, composite volcanoes or also known as the stratovolcano is usually made of materials containing increasing layers of hardened lava.
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3 years ago
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There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. Cac
Tanya [424]

Answer:

The equation that gives the overall equilibrium in terms of the equilibrium constants K and Ky is K1 = K^6 * Ky

Explanation:

we have the following balanced reaction:

CaC2 + 2H2O = C2H2 + Ca(OH)2

the value of K for this reaction will be equal to:

K = ([C2H2] * [Ca(OH)2])/([CaC2] * [H2O]^2)

if we multiply the reaction by the value of 6, we have:

6CaC2 + 12H2O = 6C2H2 + 6Ca(OH)2

Again, the value of K for this reaction will be equal to:

K,´ = ([C2H2] ^6 * [Ca(OH)2]^6)/([CaC2]^6 * [H2O]^12) = K^6

For the second reaction:

6C2H2 + 3CO2 + 4H2O = 5CH2CHCO2H

The value of K for this reaction:

K2 = ([CH2CHCO2H]^5)/([C2H2]^6 * [CO2]^3 * [H2O]^4)

we also have:

K1 = ([CH2CHCO2H]^5)/([C2H2]^6 * [CO2]^3 * [H2O]^16)

Thus:

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4 0
3 years ago
4. Which is produced when a base reacts with water?
Dennis_Churaev [7]

Answer:

hydroxide ion

Explanation:

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5 0
3 years ago
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How many moles of KBr will be produced from 10.51 moles of BaBr2?
gregori [183]

Answer:

21.02moles of KBr

Explanation:

Parameters given:

Number of moles BaBr₂ = 10.51moles

Complete reaction equation:

           BaBr₂ + K₂SO₄ → KBr + BaSO₄

Upon inspecting the given equation, we find out that the atoms are not balanced on both sides of the equation:

        The balanced equation is:

           BaBr₂ + K₂SO₄ → 2KBr + BaSO₄

From the equation:

     1 mole of BaBr₂ produces 2 moles of KBr

∴   10.51 moles of BaBr₂ will yield (2 x 10.51) moles = 21.02moles of KBr

7 0
4 years ago
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