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3 years ago

Use these images to identify each state of matter.

Chemistry

1 answer:

rewona [7]3 years ago

4 0

Answer:

Just too clarify its actually

A: gas

B: solid

C: liquid

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Mg(OH)2 is a sparingly soluble salt with a solubility product, Ksp, of 5.61×10−11. It is used to control the pH and provide nutr

Solnce55 [7]

Answer:

The ration of the molar solubility is 165068.49.

Explanation:

The solubility reaction of the magnesium hydroxide in the pure water is as follows.

$Mg(OH)_{2}\Leftrightarrow Mg^{2+}(aq)+2(OH)^{-}(aq)$

$[Mg^{2+}][OH^{-}]$

Initial 0 0

Equili +S +2S

Final S 2S

$K_{sp}=[Mg^{2+}][OH^{-}]$

$5.61\times 10^{-11}=(S)(2S)^{2}$

$S=(\frac{5.61\times 10^{-11}}{4})^{1/3}=2.41\times 10^{-4}M$

Solubility of $Mg(OH)_{2}$ in 0.180 M NaOH is a follows.

$Mg(OH)_{2}\Leftrightarrow Mg^{2+}(aq)+2(OH)^{-}(aq)$

$[Mg^{2+}][OH^{-}]$

Initial 0 0

Equili +S +2S

Final S 2S+0.180M

$K_{sp}=[Mg^{2+}][OH^{-}]$

$5.61\times 10^{-11}=(S)(2S+0.180)^{2}$

$S=1.46\times 10^{-9}M$

$Ratio\,of\,solubility=\frac{2.41\times 10^{-4}}{1.46\times 10^{-9}}=165068.49$

Therefore, The ration of the molar solubility is 165068.49.

4 0

3 years ago

Which of the following reactions represents an exothermic reaction

Licemer1 [7]

Whichever one has a negative enthalpy value.

5 0

4 years ago

What can you conclude about the relative magnitudes of the absolute values of ΔHsoluteΔHsolute and ΔHhydrationΔHhydration, where

olganol [36]

Absolute value describes the distance of a number on the number line from 0 without considering which direction from zero the number lies. The absolute value of a number is never negative. The absolute value of 5 is 5.

<u>Explanation:</u>

The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. The hydration enthalpy is the enthalpy change when 1 mole of gaseous ions dissolve in sufficient water to give an infinitely dilute solution. Hydration enthalpies are always negative.

Heat of hydration or enthalpy of hydration of ions corresponds to the heat that is released by hydration of one mole of ions at a constant pressure. The more the ion is hydrated, the more heat is released. Degree of hydration depends on the size and charge of ion.

7 0

3 years ago

I need help fast!! Djdndndndndndnnds

adell [148]

Answer:

1st one: carbon dioxide

2nd: Glucose

3rd: Oxygen

4th: Energy

Sorry if this is wrong because I don't see the options!

Hope this helps!

6 0

3 years ago

Why are compounds, such as NaCl, more stable than the elements that make them up?

STALIN [3.7K]

Answer:

Explanation:

Why are compounds, such as NaCl, more stable than the elements that make them up?

the driving force for chemical reaction is that elements and compounds wil react until they produce more stable matter,

Na metal and Cl2 are very reactive. When they react with each other they become more stable as the Na+ and Cl− ions

6 0

2 years ago