Ch.2 - Atoms, Molecules, and Ions

Brown - Chemistry: The Central Science 14th Edition

Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경

Brown 14th Edition

Ch.2 - Atoms, Molecules, and Ions

문제 80c

2장, 문제 80c

Assume that you encounter the following sentences in your reading. What is the chemical formula for each substance mentioned? (c) Hydrogen cyanide is a very poisonous gas.

검증된 단계별 안내

Identify the elements present in the compound mentioned. In this case, hydrogen cyanide contains hydrogen (H), carbon (C), and nitrogen (N).

Understand the naming convention. The 'cyanide' part of hydrogen cyanide refers to a CN group, which is a common way to denote a cyanide ion.

Determine the chemical formula for the cyanide ion. Cyanide ion is composed of one carbon atom and one nitrogen atom, forming a CN- ion.

Combine the elements according to their stoichiometry in the compound. Since it is hydrogen cyanide, it consists of one hydrogen atom and one cyanide ion.

Write the chemical formula by placing the symbols of the elements and their respective quantities next to each other. For hydrogen cyanide, this would be HCN.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Chemical Formula

A chemical formula is a symbolic representation of a substance that indicates the types and numbers of atoms present. It provides essential information about the composition of a compound, using element symbols from the periodic table and subscripts to denote the number of each type of atom. For example, the formula for water is H2O, indicating two hydrogen atoms and one oxygen atom.

Hydrogen Cyanide

Hydrogen cyanide (HCN) is a highly toxic compound consisting of one hydrogen atom, one carbon atom, and one nitrogen atom. It is a colorless gas with a faint, bitter almond odor and is known for its use in various industrial processes as well as its lethal effects on humans and animals. Understanding its structure is crucial for recognizing its chemical behavior and potential hazards.

Toxicity of Chemicals

Toxicity refers to the degree to which a substance can harm living organisms. It is influenced by factors such as the dose, route of exposure, and the specific biological systems affected. In the case of hydrogen cyanide, its high toxicity is due to its ability to inhibit cellular respiration, leading to severe physiological effects and potentially death if inhaled or ingested.

관련 실천

교과서 질문

(b) Pentane is the alkane with a chain of five carbon atoms. Determine its molecular formula.

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교과서 질문

(a) What is a hydrocarbon?

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교과서 질문

Write the chemical formula for each substance mentioned in the following word descriptions (use the front inside cover to find the symbols for the elements you do not know). (b) On treatment with hydrofluoric acid, silicon dioxide forms silicon tetrafluoride and water. (use the front inside cover to find the symbols for the elements you do not know). (c) Sulfur dioxide reacts with water to form sulfurous acid. (use the front inside cover to find the symbols for the elements you do not know). (d) The substance phosphorus trihydride, commonly called phosphine, is a toxic gas. (e) Perchloric acid reacts with cadmium to form cadmium(II) perchlorate.

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교과서 질문

Give the name or chemical formula, as appropriate, for each of the following binary molecular substances: (f) tetraphosphorus hexasulfide.

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교과서 질문

(b) Pentane is the alkane with a chain of five carbon atoms. Determine its empirical formula.

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