Which substance is a binary acid

Answers

Answer 1

Answer: It is knownthat acids compounds contains hydrogen and produces hydrogen ion in water. A binaryacid however is an acid that have two elements, one of the element has ahydrogen attached to it. Examples of binary acids are hydrogen fluoride (HF),hydrogen bromide (HBr) and hydrogen sulfide (H2S). In naming a binary acid, ithas two rules; one, as pure compounds and two, as acid solutions. For purecompounds, start with the name ‘hydrogen’ and end the anion name with ‘-ide’. Foracidic compounds, start with ‘hydro-‘, end the anion with ‘-ic’ and add ‘acid’.

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l. Given the balanced equation representing a reaction:What occurs during this reaction?1) Energy is absorbed as bonds are broken.2) Energy is absorbed as bonds are formed.3) Energy is released as bonds are broken4) Energy is released as bonds are formed.

Answers

1) energy is absorbed and bonds are broken

This is due to two reasons
1. The breaking of bonds requires and input energy. The formation of bonds is a release on energy. As bond breaking requires energy, it is only natural that once of the answers would involve the absorption of energy.
2. O2 is the covalent bond between two oxygen molecules. When these molecules are separated the bond is broken. As such the answer must be 1

I hope this helps

Write net ionic equations for the reaction, if any, that occurs when aqueous solutions of the following are mixed. ammonium sulfate and barium nitrate Answer ‍ ‍ ‍ ; lead(II) nitrate and sodium chloride Answer ‍ ‍ ‍ ‍ ; sodium phosphate and potassium nitrate Answer no reaction; sodium bromide and rubidium chloride Answer no reaction; copper(II) chloride and sodium hydroxide Answer ‍ ‍ ‍ ‍ ‍

Answers

Answer:

See explanation for details

Explanation:

ammonium sulfate and barium nitrate Answer ‍

Ba2+(aq) + SO4^2-(aq) ----------> BaSO4(s)

lead(II) nitrate and sodium chloride Answer ‍

Pb2+(aq) + 2Cl-(aq) -----------> PbCl2(s)

copper(II) chloride and sodium hydroxide Answer ‍ ‍ ‍ ‍ ‍

Cu2+(aq) + 2OH-(aq) -------------> Cu(OH)2(s)

There can only be a net ionic reaction when a precipitate is formed as the two solutions are mixed together.

There are no net ionic equations for the given reactions as neither of them forms a precipitate.The correct option is no reaction.

The reactions are as follows:

$(NH_4)_(2)SO_4+Ba(NO_3)_2\rightarrow NH_4NO_3+BaSO_4\n$

Ionic equation is defined as a chemical equation which represents electrolytes in aqueous solutions and are expressed as dissociated ions. Ions present in aqueous solutions are stabilized by ion dipole interactions with the water molecules which are present.

An ionic equation can be written for any electrolyte which dissociates and reacts with the polar solvent. In a balanced ionic equation , number and type of atoms on each sides of reaction arrow are same. Even the net charge on both sides of the arrow is same.

There can only be a net ionic reaction when a precipitate is formed as the two solutions are mixed together.Thus, the correct option is no reaction.

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What would happen to the ratio of copper to iron if you had placed more nails in the beaker ?

Answers

I think the ratio of copper to iron will still be the same even if you add more nails in the beaker. This is because each nail placed is assumed to have the same composition with the other nails and is assumed to be homogeneous.

Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences.

Answers

The correct answer for above statement is:

True

Explanation:

Prices don’t show the total cost of reconstruction fuels to each of us personally or to the community as a whole. Remembered as externalities, the unknown costs of fossil fuels aren’t described in their business price, notwithstanding severe consequences on our health and environment.

Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences.

The statement about “Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences” is true. The environmental, economic, and social consequences greatly affects the global dependence.

How many protons, electrons, and neutrons does the following isotope contain? 40 Ar

Answers

The isotope 40Ar contains 18 protons, 18 electrons, and 22 neutrons.

The isotope 40Ar refers to the isotope of argon, which has an atomic number of 18.

Since the atomic number represents the number of protons in an atom, we can conclude that the isotope 40Ar contains 18 protons.

Argon is a neutral atom, so the number of electrons also matches the number of protons. Therefore, the isotope 40Ar contains 18 electrons.

To find the number of neutrons, we need to subtract the atomic number (protons) from the mass number (protons + neutrons). The mass number of 40Ar is 40. Subtracting the atomic number of 18 from the mass number gives us:

Number of neutrons = Mass number - Atomic number

Number of neutrons = 40 - 18

Number of neutrons = 22

Therefore, the isotope 40Ar contains 18 protons, 18 electrons, and 22 neutrons.

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Answer:

18 protons, 18 electrons, 22 nuetrons

Explanation:

Argon has an atomic # of 18. Atomic #s show the amount of protons and electrons it has. Atomic mass - atomic # = # of nuetrons. 40-18=22

What unit is used to express the pressure of a gas?(1) mole (2) joule (3) kelvin (4) pascal