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satela [25.4K]
3 years ago
6

A saturated solution of copper (II) hydroxide is prepared in a beaker by adding the solid to water and stirring. When the soluti

on is
prepared, crystals of copper (ll) hydroxide remain on the bottom of the beaker.

Which change will cause the molar solubility of copper (II) hydroxide to increase?


A)addition of solid copper chloride


B)

addition of solid sodium hydroxide


C)

addition of aqueous hydrochloric acid


D)

dilution of the solution by addition of water
Chemistry
1 answer:
12345 [234]3 years ago
8 0

Answer:

addition of aqueous hydrochloric acid

Explanation:

The solubility of copper (ll) hydroxide in water is negligible. This implies that the substance is only slightly soluble in water.

However, the addition of aqueous hydrochloric acid leads to the following reaction;

Cu(OH)2 + 2HCl ---------> CuCl2 + 2H2O

Copper II chloride is soluble in water hence the crystals dissolve when stirred. and the molar solubility increases.

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Naming chlorine as an Ion
Katarina [22]

The name of the ion is chloride.

To name a <em>monatomic anion</em>

• <em>Drop the ending</em> of the element name (chlor<u>ine</u> → chlor)

• <em>Add the ending</em> <em>ide</em> (chlor + ide → chloride)

4 0
3 years ago
What is 10 times as many as 1 hundred is blank hundred or blank thousand ?
Rama09 [41]

10 times as many as 1 hundred is 10 hundred or 1 thousand.

This is the question of simple multiplications related to a place value system.

The given equation in unit form can be rewritten as:

10 × 1 × 100 = (X × 100) or (Y × 1000)

Arranging in two parts, we get,

10 × 1 × 100 = X × 100           ........(1)

10 × 1 × 100 = Y × 1000         ........(2)

Now, calculating the value of X and Y,

From equation (1), we get,

10 × 1 × 100 = X×100

or, 1000 = X × 100

or, X = 10

Hence, 10 times as many as 1 hundred is 10 hundred.

Similarly, from equation (2). we get,

10 × 1 × 100 = Y × 1000

or, 1000 = Y × 1000

or, Y = 1

Hence, 10 times as many as 1 hundred is 1 thousand.

Therefore, 10 times as many as 1 hundred is 10 hundred or 1 thousand.

To learn more about hundreds, thousands, and place values, visit: brainly.com/question/17785584

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8 0
1 year ago
An emerald gemstone is an impure form of the mineral beryl, Be3Al2Si16O18. What is the percentage of silicon in the mineral?
solong [7]

Answer:

b. 54.9%

Explanation:

An emerald gemstone has the formula Be₃Al₂Si₁₆O₁₈. We can find the mass of each element in 1 mole of Be₃Al₂Si₁₆O₁₈ by multiplying the molar mass of the element by its atomicity.

Be: 3 × 9.01 g = 27.03 g

Al: 2 × 26.98 g = 53.96 g

Si: 16 × 28.09 g = 449.4 g

O: 18 × 16.00 g = 288.0 g

Total mass = 818.4 g

The mass percentage of silicon is:

(449.4 g / 818.4 g) × 100% = 54.91%

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3 years ago
the half-life of a certain radioisotope is 12 days. how much (mass) of a 60 mg sample will remain after 36 days
bixtya [17]

Answer:3.5

Explanation:

6 0
3 years ago
What is meant by she? select one: a. shared half electrodes b. shifting half of the electricity c. standard hydrogen electrode d
ss7ja [257]

Standard Hydrogen Electrode is meant by SHE.

The Standard Hydrogen Electrode, often known as SHE, has a standard electrode potential of 0 at 298 K. It is frequently abbreviated as SHE. This is so that it can be used as a benchmark when comparing it to other electrodes.

The SHE half cell reaction is expressed as follows:

2H+ (aq) + 2e- → H2 (g)

Typically, a platinum electrode serves as the catalyst for the reaction described above. The hydrogen gas inside of this half cell is under 1 bar of pressure.

The standard hydrogen electrode is used to measure the current and voltage fluxes during half-reactions.

The Standard Hydrogen Electrode, or SHE for short, serves as a base line in the electrochemical reactivity series and is used to calculate the potential values of various atoms and ions.

At a temperature of 298K, the standard electrode potential (SHE) is set to zero.

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4 0
2 years ago
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