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4 years ago

What is stratosphere

Chemistry

1 answer:

____ [38]4 years ago

4 0

The stratosphere is above the earth's troposphere. It is about 32 miles above the earth's surface.

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Classify each of the following substances as either a strong or weak acid, strong or weak base, or a soluble or insoluble salt.

sleet_krkn [62]

Answer:

KOH is a strong base, $HClO_{4}$ is a strong acid, $HNO_{2}$ is a weak acid, NaBr is a soluble salt and $PbCl_{2}$ is an insoluble salt

Explanation:

According to solubility rule, all chlorides, bromides and iodides of metal ions are soluble except for $Pb^{2+},Ag^{+}$ and Hg^{+}[/tex].

Therefore NaBr is a soluble salt and $PbCl_{2}$ is an insoluble salt.

There are seven strong acids : HCl, HBr, HI, $H_{2}SO_{4}$ , $HNO_{3}$ , $HClO_{3}$ and $HClO_{4}$ .

All group IA metal hydroxides e.g. NaOH, KOH etc. are strong base. Also, $Ca(OH)_{2}$ , $Sr(OH)_{2}$ and $Ba(OH)_{2}$ are strong bases.

So, KOH is a strong base, $HClO_{4}$ is a strong acid and $HNO_{2}$ is a weak acid.

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3 years ago

Why does a liquid take the shape of the container but not expand to completely fill the container

ohaa [14]

The particles in a liquid are not stuck in fixed positions, which is why liquids flow to take the shape of a container into which they are placed. However, the particles in a liquid are also close together, so they have a set volume and cannot expand beyond that.

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3 years ago

Read 2 more answers

When zn(oh)2(s) was added to 1.00 l of a basic solution, 1.09×10−2 mol of the solid dissolved. what is the concentration of oh−

uysha [10]

The concentration of the basic solution is determined by:

N = (number of moles / volume of solution)

number of moles = 1.09 x 10^-2 mol
volume of solution = 1 liter
N of basic solution = 1.09 x 10^-2 mol / 1 liter
N = 1.09 x 10^-2 mol/L

The initial concentration of Zn (OH)2 is 0; the basic solution is 1.09x10^-2 M, then the concentration of OH in the final solution is 1.09x10^-2 M

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3 years ago

Read 2 more answers

What is indicated by the methyl-prefix?

lozanna [386]

Answer:

B.) The molecule is a branched hydrocarbon.

Explanation:

A hydrocarbon is any molecule made up of carbon and hydrogen exclusively. A methyl- prefix denotes the presence of a methyl group (CH₃), which is situated as a branch off of a hydrocarbon carbon.

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2 years ago

Science help for 6th grade advanced?

tino4ka555 [31]

16287.50 I think? I just googled it though so I’m not sure if it’s correct.

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3 years ago