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3 years ago

Please only answer if you are 100% sure it's a major grade. . 35 POINTS

Chemistry

2 answers:

pickupchik [31]3 years ago

6 0

Answer:

Explanation:

since the farther you go out in the atmosphere the temperature decrease and the air pressure drops

Jobisdone [24]3 years ago

5 0

The answer is B. Changes in air pressure and temperature. The changes in air temperature are often influenced by the increase in altitude, where the increase in altitude leads to a decrease in temperature, the same is true for the opposite!

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Classify methanol (ch3oh) as a strong electrolyte, a weak electrolyte, or a nonelectrolyte.

MrRa [10]

Methanol(CH3OH) is a nonelectrolyte as it is not readily ionized when melted and dissolved, and a poor conductor of electricity when it is in solution.
Nanelectrolyte Contains covalent bonds and typically nonpolar molecules. Methanol doesn't dissolve in water, as the H of the alcohol functional group is not acidic enough so we can't easily separate it from the molecule.

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4 years ago

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How can frogs be amongst the most diverseanimals in the world

Illusion [34]

Because they can live on water and land

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3 years ago

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What is the mass of 1.25 mole of zinc

allochka39001 [22]

Answer:

Explanation:

1 mole is equal to 1 moles Zinc, or 65.38 grams.

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3 years ago

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Which hydrocarbon belongs to the Alkyne homologous series?

Ira Lisetskai [31]

Answer:

(A) CHCH

Explanation:

Hello,

Alkynes are formed when triple bonds are formed between carbons, it means that due to the triple bonds, three bonds are already exhausted and carbon atoms need four bonds to attain the octet, for that reason, an extra bond is allowed. Now, such extra bond, when talking about hydrocarbons is filled with hydrogens, for that reason the alkyne should be (A) CHCH as it also accomplishes the following formula which is not accomplished by the rest of the options:

$C_nH_{2n-2}$

Since n=2, we have:

$C_2H_2$

Which matches with CHCH.

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3 years ago

draw the lewis structure for CO2, H2CO3, HCO3-, and CO3 2-.Rank these in order of increasing attraction to water molecules. Expl

gavmur [86]

Answer:

The structures are attached in file.

Hydrogen bonding and intermolecular forces is the reason for ranks allotted.

Explanation:

In determining Lewis structure, we calculate the overall number of valence electrons available for bonding. Making carbon (the least electronegative atom) the central atom in the structure, we allocate valence electrons until each atom has achieved stability.

In order of decreasing affinity to water molecules:

$CO_{3}^{2-} > HCO_{3} ^{2-} > H_{2} CO_{3}$

This is due to the fact that the $CO_{3}^{2-}$ will accept protons more readily than the bicarbonate ion, $HCO_{3} ^{2-}$ . Carbonic acid, $H_{2} CO_{3}$ will not accept any more protons, hence it is the least attractive to water molecule, even though soluble.

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3 years ago