CHEMISTRY HIGH SCHOOL

How are HNO3(aq) and CH3COOH(aq) similar?(1) They are Arrhenius acids and they turn blue litmus red.
(2) They are Arrhenius acids and they turn red litmus blue.
(3) They are Arrhenius bases and they turn blue litmus red.
(4) They are Arrhenius bases and they turn red litmus blue.

Answers

Answer 1
Answer:

Answer:The correct answer is option (1).

Explanation:

Arrehinius acid are those which gives hydronium ion H_3O^+ when dissolved in water.

Arrehinius base are those which gives hydroxide ionOH^- when dissolved in water.

HNO_3(aq)\rightarrow H^+(aq)+NO_(3)^(-)(aq)

CH_3COOH(aq)\rightleftharpoons CH_3COO^-(aq)+H^+(aq)

Both nitric acid and acetic acid are Arrhenius acids.And they turn the color of blue litmus paper to red color.

Hence, the correct answer is option (1).

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A neutral atom of iron has a mass number of 56 and an atomic number of 26. How many protons, electrons and neutrons are in this atom? Explain how you determine each number.
The scientific notation 2 x 10-2 has what value? 0.020.0020.20.0002
If you are eating a hamburger, it is an example of a consumer eating another consumer.a) true b) false
1. You were tasked to check if the liquid sample you have is a substance or a mixture.Which among these tasks is the BEST way to do so?1. Color comparisonIl. Taste comparisonIII. Boiling Testiv.Melting Test

In which of these substances are the molecules probably moving most quickly?solid iron at −45°C
solid iron at 300°C
liquid iron at 1600°C
liquid iron at 1800°C

Answers

The substance with molecules that are probably moving most quickly is liquid iron at 1800°C. This is because the particles of the liquid iron can move or slide past each other due to the small space available for movement. It cannot be compressed further due to the repulsive forces that acts between them. And also, the temperature is increases which causes for more thermal vibration of atoms.

Answer:

The answer is D

Explanation:

Describe the primordial soup theory

Answers

The primordial soup theory suggest that life began in a pond or ocean as a result  of the combination of chemicals from the atmosphere and some form of energy to make amino acids, the building block of proteins. which would then evolve into all species.  
The theory states that life began in a warm pool or ocean from a combination of chemicals that forms amino acids, which then makes proteins. These reactions forming molecules of life  This is supposed to have happened 3.8 to 3.5 billion years ago. J.B.S. Haldane first brought about this idea and Miller and Urey made the molecules in an artificial environment with the help of methane, ammonia, hydrogen, water and no oxygen.
Hope I helped!

Primaries, the secret ballot, and the use ofreferendum and recall were efforts made during
the Progressive Era to
(1) preserve the power of political machines
(2) provide equal political rights for Native
American Indians
(3) protect States rights against federal power
(4) increase citizen participation in government

Answers

(4) Increase citizen participation in government

Primary: a way for citizens to vote for new government officials, not too influenced by party leaders
Secret Ballot: keeping a voter's votes private from others
Recall: a way for citizens to remove a government official from office
Referendum: a way for citizens to vote for or against something proposed by the legislature

During the Progressive Era, many local governments were lead by corrupt political machines. They would rig elections in their favor as well as threaten those who voted against them. Many would appoint their supporters who weren't usually qualified to government positions as incentive to vote for them (I don't know if you care but that's called the spoils system).

It's not (1) because the whole point of primaries, secret ballots, recalls, and referendums was so political machines were not dominating
It's not (2) because none of this has a lot to do with Native Americans
It's not (3) because the political machines were a local government problem, not federal
It IS (4) because by getting more people involved in the government, they can elect qualified officials, vote on laws that best benefit the people, and minimize corruption.

Select all that apply. Organic compounds must contain: hydrogen carbon oxygen nitrogen

Answers

Select all that apply. Organic compounds must contain carbon. Organic molecules mean that chemical compounds contain carbon in them. Organic also refers to living organisms. So originally, the term organic molecules are found in living things. Carbon can also bond with other four atoms because of its outer shell that has four electrons. This is the reason why organic molecules can be so large because of this bonding. For example, we need proteins in our body in order to perform the necessary functions to live. Proteins are made up of nucleic acids. And nucleic acids have a carbon-nitrogen-hydrogen bond in it

Answer: hydrogen and carbon

Explanation:

Organic compounds are those compounds that contain carbon bonded to hydrogen.Example: CH_4 is an organic compound as it contains C-H bond.

Inorganic compounds are those compounds that do not contain carbon or contain carbon not bonded to hydrogen. They might contain other elements such as nitrogen or oxygen. Example: CO_2

When are atoms considered stable?when they have satisfied the law of conservation of mass naturally or through bonding to obtain
full valence shells

when they have satisfied the octet rule naturally or through bonding to obtain full valence shells

when their valence electrons have "fallen" back to ground state through bonding

Answers

Answer:

when they have satisfied the octet rule naturally or through bonding to obtain full valence shells

Explanation:

Generally, most atoms of an element are unstable because they have a void in their electron shell to fill, hence, they need to react with other elements to fulfil this task of octet.

Octet rule states that atoms of elements engage in reactions to form compounds so they can have eight (8) valence electrons in their shell. Noble gases e.g argon, neon etc. are elements that have naturally satisfied this octet rule by possession of 8 valence electrons in their shell. Other elements that do not have this naturally becomes reactive and enter bonding with other atoms to obtain full valence shells.

Which base is the strongest for the given [H+]? 10-9 10-11 10-10 10-12

Answers

Answer:The strongest base with H^+] concentration is [H^+]=10^(-12) M.

Explanation:

pH=-\log[H^+]

Higher the pH value less will be the concentration of [H^+] ion concentration and stronger will be the base.

1. [H^+]=10^(-9) M

pH=-\log[10^(-9)]=9

2.[H^+]=10^(-11) M

pH=-\log[10^(-11)]=11

3.[H^+]=10^(-10) M

pH=-\log[10^(-10)]=10

4.[H^+]=10^(-12) M

pH=-\log[10^(-12)]=12

The strongest base with H^+concentration is [H^+]=10^(-12) M.
The answer is 10-12. The relationship of pH and [H+] is pH = -lg[H+]. And the higher pH, the stronger base is. So the strongest base has the lowest concentration of H+.
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