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NikAS [45]
3 years ago
12

Which phrases accurately describe acids? Check all that apply.

Chemistry
2 answers:
weqwewe [10]3 years ago
8 0

Answer: Option 1, 4 and 5 describe acids accurately.

Explanation:

Option 1: Acids have a sour taste because of the concentration of H^+ ion.

Option 2: They are corrosive in nature, that is they are not at all gentle with the skin and fabric as some acids intend to burn skin such as H_2SO_4 is a strong acid which can burn skin as well as fabric.

Option 3: Acids need electrons to release H^+ ions and non-metals do not donate electrons hence, there is no reaction between a non-metal and an acid.

Option 4: All acids do contain hydrogen. They dissociate in the presence of water to produce H^+ ions.

                                 HCl\overset{H_2O}{\rightarrow} H^++Cl^-

Option 5: Acids do conduct electricity that is they carry electrical charges. This was explained by Arrhenius. He said that the acids dissociate into H^+ions, when it is dissolved in water. These ions hence acts as charge carriers in water.

Flauer [41]3 years ago
7 0

Answer:

taste sour, contain hydrogen, carry electric charges

Explanation:

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Answer:

the number of neutrons in above isotope = A - Z = 27 - 13 = 14. Note: The molar mass of aluminium, which is average of atomic masses of all isotopes = 26.981538 g/mol, since 13Al27 is the major isotope.

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B. CA, 14

Explanation:

Atoms of elements contain small particles known as electrons, neutrons, and protons. The nucleus of an atom is made up of neutrons and protons which are at the center of the atom. Electrons on the other hand surrounds the nucleus. Electron has negative charge while proton has a positive charge. The number of neutrons is equivalent to the number of protons . In addition, the number of protons is equal to mass number minus the number of electrons.

For the compound XCl_{2}, it can be broken down into X^{2+} and 2Cl^{-}. Its ion has a mass of 34 and 18 electrons which means it has already lost 2 electrons.

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For the given element, the number of electrons is 18+2 = 20 electrons.

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