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4 years ago

Why are the seasons for the southern hemisphere reversed from the northern hemisphere

Chemistry

1 answer:

MArishka [77]4 years ago

5 0

Becuse the earth rotates the opisate way on the other side of the equator forgive me if im wrong.

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What are the steps to finding an items density?

Assoli18 [71]

There are 5 steps:
1- measure the mass of the container
2- measure the volume of the liquid
3- measure the combined mass of the liquid and the container.
4-determine the mass of the liquid alone
5-divide the mass by the volume.

3 0

3 years ago

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

What type of compound is calcium oxide

mrs_skeptik [129]

CaO ( calcium oxide) is a basic oxide.

6 0

3 years ago

What is enthalpy in chemistry pls help

Yakvenalex [24]

<span>a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.</span>

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3 years ago

A substance is composed of only one kind of atom and can't be separated into simpler substances or converted into another substa

Svetach [21]

The substance most likely is an inert element because it is only composed of one kind of atom and cant be separated further. Also, it cannot be converted to another type of substance. An inert material doesn't react to any substance. Examples are Neon and Krypton.

7 0

3 years ago