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General Chemistry Semester 1 Exam Review | Latest Update | 2024/2025 | Graded A+ CA$13.75   Add to cart
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General Chemistry Semester 1 Exam Review | Latest Update | 2024/2025 | Graded A+
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General Chemistry Semester 1 Exam Review | Latest Update | 2024/2025 | Graded A+ What is the difference between a heterogeneous and a homogeneous mixture, and how can each be separated? A heterogeneous mixture has visibly different components and can be separated by physical means such a...

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  • August 21, 2024
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  • 2024/2025
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General Chemistry Semester 1 Exam
Review | Latest Update | 2024/2025 |
Graded A+
What is the difference between a heterogeneous and a homogeneous mixture, and how can each

be separated?


✔✔ A heterogeneous mixture has visibly different components and can be separated by physical

means such as filtration or decantation, while a homogeneous mixture has a uniform composition

throughout and may require more complex methods like distillation for separation.




How do you determine the empirical formula of a compound from experimental data on its

composition?


✔✔ To determine the empirical formula, convert the mass percentages of each element to moles,

then divide by the smallest number of moles to find the simplest whole-number ratio of the

elements.




What is the concept of molarity, and how is it used to express the concentration of a solution?


✔✔ Molarity is a measure of concentration defined as the number of moles of solute per liter of

solution. It is used to express how much solute is present in a given volume of solution.




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, What is the principle behind using titration to determine the concentration of a solution?


✔✔ Titration involves adding a solution of known concentration (titrant) to a solution of

unknown concentration until the reaction reaches its endpoint, allowing the concentration of the

unknown solution to be calculated.




What is the difference between the concepts of heat and temperature in chemistry?


✔✔ Heat is the transfer of thermal energy between substances or systems due to a temperature

difference, while temperature is a measure of the average kinetic energy of the particles in a

substance.




How do you calculate the theoretical yield of a product from a chemical reaction, and what

factors can affect it?


✔✔ Theoretical yield is calculated based on the balanced chemical equation and the amount of

limiting reactant. Factors affecting it include reaction conditions, purity of reactants, and reaction

completeness.




What is the role of the law of conservation of mass in chemical reactions, and how is it applied in

balancing chemical equations?




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