When one compound dissolves in water, the only positive ion produced in the solution is H3O+(aq). This compound is classified as(1) a salt
(2) a hydrocarbon
(3) an Arrhenius acid
(4) an Arrhenius base

Answers

Answer 1

Answer:

Answer : The correct option is, (3) an Arrhenius acid

Explanation :

According to the Arrhenius concept, an acid is a substance which ionizes in the water to give hydronium ion $(H_3O^+)$ or hydrogen ion $(H^+)$ and a base is a substance which ionizes in the water to give hydroxide ion $(OH^-)$ .

When one compound dissolves in water, then only positive ion produced in the solution is $(H_3O^+)$ . This compound is classified as an Arrhenius acid.

Hence, the correct option is, (3) an Arrhenius acid

Answer 2

Answer: When one compound dissolves in water, the only positive ion produced in the solution is (aq). This compound is classified as an Arrhenius acid.

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What energy resource can be used instead of fossil fuel

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We could use solar power, wind power, geothermal power, hydroelectric power, or nuclear power. There are probably more but this is what I can think of off the top of my head. I hope this helps. Let me know if anything is unclear.

During fusion, the hydrogen in the Sun is?a. entirely converted to energy.

b. entirely converted to helium.

c. partially converted to energy.

d. partially converted to deuterons.

Answers

i am not sure but i think the answer is no C

it is c partially converted to energy

Muscles perform what type of energy transformation?

Answers

Muscles perform energy transformation from chemical energy to kinetic energy which is very evident as we do our day to day activities. Hope this answers the question. Have a nice day. Feel free to ask more questions. Thank you.

At STP, which list of elements contains a solid, a liquid, and a gas?(1) Hf, Hg, He (3) Ba, Br2, B
(2) Cr, Cl2, C (4) Se, Sn, Sr

Answers

Periodic table contain element of various states like solid, liquid and gases. Thus the that list of elements contains a solid, a liquid, and a gas is HF, Hg, He. Hence option A is correct option.

What is periodic table?

Periodic table is a table in which we find elements with properties like metals, non metals, and metalloids

STP means standard temperature and pressure where temperature is 273.15 K and pressure is 1 bar. It is known that only bromine (Br) and mercury (Hg) are in liquid form at STP. Whereas noble gases like He, Ne, Ar are gases in nature.

HF - solid, Hg - liquid, and He - gas

Ba - solid, - liquid, and B - solid

Cr - solid, - gas, and C - solid

Se - solid, Sn - solid, and Sr - solid

Thus, we can conclude that list of elements contains a solid, a liquid, and a gas is HF, Hg, He. Hence option A is correct option

Learn more about periodic table, here:

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Answer: Option (1) is the correct answer.

Explanation:

STP means standard temperature and pressure where temperature is 273.15 K and pressure is 1 bar or 0.98 atm.

It is known that only bromine (Br) and mercury (Hg) are in liquid form at STP. Whereas noble gases like He, Ne, Ar etc are gases in nature.

Hence, given elements are differentiated as follows.

HF - solid, Hg - liquid, and He - gas

Ba - solid, $Br_(2)$ - liquid, and B - solid

Cr - solid, $Br_(2)$ - gas, and C - solid

Se - solid, Sn - solid, and Sr - solid

Thus, we can conclude that list of elements contains a solid, a liquid, and a gas is HF, Hg, He.

What is the ph of a 0.027 M KOH solution?

Answers

The pH of a 0.027 M KOH solution is 12.4 and since KOH is a strong base it will dissociate completely in the solution

How do we calculate?

KOH is a strong base, so it will dissociate completely in solution to form potassium ions and hydroxide ions. The concentration of hydroxide ions will be equal to the concentration of KOH, which is 0.027 M.

The pH of a solution can be calculated using the following equation:

pH = -log[H+]

where [H+] is the concentration of hydrogen ions in the solution.

The concentration of hydrogen ions in a basic solution is very low, so we can use the approximation that:

pH = 14 - log[OH-]

pH = 14 - log(0.027)

pH = 12.4

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First you calculate the concentration of [OH⁻] in solution :

POH = - log [ OH⁻]

POH = - log [ 0.027 ]

POH = 1.56

PH + POH = 14

PH + 1.56 = 14

PH = 14 - 1.56

PH = 12.44

hope this helps!

Assume that 13.5 g solid aluminum (Al) react with HCl to produce solid aluminum chloride (AlCl3) salt and gaseous hydrogen (H2) at standard temperature and pressure.How many moles of Al react?

How many moles of H2 are produced?

How many liters of H2 are produced?

Answers

0.5 moles $\bold {Al}$ is required for the given reaction to occur. Mole is a constant that represents a certain amount of particles such as atoms, ions, or molecules.