Chemistry 2e Study guides, Class notes & Summaries

AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE. Relative atomic mass - ANS.The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - ANS.Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogradro constant - ANS.the number of particles in a mole ideal gas equation - ANS.pV = nRT empirical formula - ANS.the simplest whole number ...

A cathode correct answer: is an electrode where reduction occurs In an electrochemical cell based on the following reaction Zn(s) + Cu2+(aq) ⟶ Zn2+(aq) + Cu(s) Which species acts as the anode? correct answer: Zn(s) In the reaction Mg(s) + 2 Ag+(aq) ⟶ Mg2+(aq) + 2 Ag(s) What is the reduction half-reaction? correct answer: 2 Ag+(aq) + 2e- ⟶ 2 Ag(s) When paired with the anode half-reaction Co(s) ⟶ Co2+(aq) + 2 e-; E° = -0.28 V Which of the following cathode half-reactions...

IGCSE CHEMISTRY STUDY GUIDE EXAM 2024. State the name of the gas formed at the anode during the electrolysis sodium chloride solution. (Triple science only!) - CORRECT ANSWER chlorine State the name of the gas formed at the cathode during the electrolysis sodium chloride solution. (Triple science only!) - CORRECT ANSWER hydrogen The solution formed after the electrolysis sodium chloride solution was tested with the indicator phenolphthalein. The indicator turned pink. Explain this res...

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AQA A LEVEL Chemistry All Answers Correct 2024 Relative atomic mass of an atom of Carbon-12 Relative molecular mass carbon-12 atom The Avogradro constant ideal gas equation The average mass of an atom of an element, relative to 1/12th of the mass Average mass of a molecule compared to 1/12th of the mass of a the number of particles in a mole pV = nRT empirical formula the simplest whole number ratio of atoms of each element in a compound percentage atom econom...

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Clinical Laboratory Chemistry, 2e (Sunheimer) Chapter 2 Safety in the Clinical Chemistry Laboratory 1) OSHA standards are written in which of the following documents? A) Codes of State Regulations (CSRs) B) Codes of Federal Regulations (CFRs) C) Safety Data Sheets (SDS) D) National Fire Protection Agency (NFPA) Answer: B 2) A class A fire involves: A) Combustible metals such as magnesium. B) Flammable liquids, for example, methanol. C) Ordinary combustible material including paper and...

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Chemistry Final Exam (Answered) Oxidation Rules Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) -Mg=0,H2=0, C=0 Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion -Mg^2+=+2, Na^+=+1, O^2-=-2 Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. Rule 4: The oxidation numb...