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Chemistry Exam Practice – Moles Concentration
Understanding moles concentration calculations is essential for accurately determining the concentration of a solution. Follow the steps to calculate the amount of solute, measure the volume of the solution, and calculate the concentration using the molarity equation. Additionally, learn how to perform a titration practical to determine the concentration of an unknown solution using stoichiometry… Read more
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Discovering Photosynthesis: Testing a Leaf for Starch – A Hands-On Practical Experiment
Dive into the captivating world of plant biology with our hands-on practical experiment, designed to demonstrate the process of photosynthesis by testing a leaf for starch. By examining starch production in leaves, we can explore the incredible process through which plants convert sunlight into energy, producing the oxygen we breathe and the food we eat.… Read more
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Titration – Exam Practice
Titration is an essential technique used in many areas of chemistry to determine the concentration of a solution. In this practical experiment, the aim is to determine the value of x in Fe(NH4)2(SO4)2.xH2O using titration against a standard solution of potassium manganate (VII). The obtained results are used to calculate the amount of water of… Read more
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Enthalpy – Thermometric titration
Thermometric titration is a powerful technique used to determine the concentration of acids and bases by measuring the temperature change during a chemical reaction. In this article, we explore the process of thermometric titration and how it is used to calculate the enthalpy change of neutralization for hydrochloric acid and ethanoic acid using a standard… Read more
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Enthalpy – Hess Cycles
Learn how to plan an investigation and select the correct variables to control with this experiment to determine the enthalpy change for the reaction MgSO4 (s) + 7H2O(l) → MgSO4•7H2O(s) using Hess cycles. By measuring the enthalpy change of solution for the two solids and using a Hess cycle to calculate the enthalpy change for… Read more
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Enthalpy – Student Design
In this experiment, students will have the opportunity to develop their practical and analytical skills, which are essential for the IA internal assessment or practical exams. By investigating the enthalpy change that occurs when solid ammonium chloride dissolves in water, students will learn how to conduct a scientific experiment using calorimetry techniques. This experiment will… Read more
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