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4 dni temu · Use the drop-down menus to label each of the following changes P for physical change and C for chemical change. C The substance changes to a new substance. C The original substance can be recovered. C The color changes. C Gas is produced and given off. C The substance changes size, shape, or volume.
4 dni temu · General Chemistry 2 Lab Practical. Purpose: The purpose of this experiment was to use the freezing point depression caused by the dissolution of solute in a solvent in order to determine the molar mass of the solute. ΔTf = Kf · m. ΔTb = Kb · m. m = moles solute / kg solvent. M = moles solute / L solution.
4 dni temu · Archimedes’ principle is very useful for calculating the volume of an object that does not have a regular shape. The oddly shaped object can be submerged, and the volume of the fluid displaced is equal to the volume of the object. It can also be used in calculating the density or specific gravity of an object.
3 dni temu · The formula for calculating the density of an object using water displacement is given by: \ [ D = \frac {m} {FW - IW} \] where: \ (D\) is the density in grams per cubic centimeter (g/cm³), \ (m\) is the mass of the object in grams, \ (FW\) is the final water level in milliliters (mL), \ (IW\) is the initial water level in milliliters (mL).
In this course, we will focus on oscillations in one dimension. Let’s consider a thin string of length \(l\) that is fixed at its two endpoints, and let’s call the displacement of the string from its horizontal position \(u(x,t)\) (figure [fig:pde1]).
3 dni temu · For example, we might want to know how much water to add to dilute a saline solution, or we might want to determine the percentage of concentrate in a jug of orange juice. We can use fractions, ratios, or percentages to describe quantities in mixtures.
3 dni temu · A lab report is broken down into eight sections: title, abstract, introduction, methods and materials, results, discussion, conclusion, and references. Title. The title of the lab report should be descriptive of the experiment and reflect what the experiment analyzed. Ex: "Determining the Free Chlorine Content of Pool Water" Abstract
