Oct 22, 2007 · The melting point is lowered by 1.85 degrees Celsius if 29.2 grams of salt are dissolved in each Kg of water (called a "0.5 molal solution" of salt. The Na and Cl dissociate right away when dissolved, and so for a 0.5 molal solution of salt, there is a
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Perform the following conversions. a. 850 cal to J 3556.4 J 850 cal x 4.184 J = 3556.4 J 1 cal b. 5.901 J to cal 1.421 cal 5.901 J x 1 cal = 1.421 cal 4.184 J . Title: Microsoft Word - Chapter 10 Worksheet #2 Answer.docx AuKingclima: DBUCHANA Created Date: 9/28/2012 1:45:43 PM
For dilute solutions, one part per million equals one mg/L. In most cases, the two are considered equal. To convert from molarity to ppm, first determine the molar mass of a substance. For instance, chloride has a molar mass of 35.5. A solution with 1 M concentration would have 35.5 g of chloride per 1 L of solution.
May 28, 2020 · 1. Pour water into a plastic container. Full up an ice tray, a food storage tub, a popsicle tray, or a plastic bottle with water. You can use room-temperature water, cold water, or hot water straight from the tap. Hot water actually freezes more quickly than cold water. Try freezing separate containers of hot and cold water to compare the results.
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Table 1 Density and NaOH content of membrane grade caustic soda solutions at 60°F 28 Table 2 Density and NaOH content of diaphragm grade caustic soda solutions at 60°F 29 Table 3 Specific heats of caustic soda in Btu/lb·°F 30 Graph 1 Boiling and solidifying temperature of aqueous caustic soda solutions 31
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Q: This is grade 12 physics please show all work as to how you got the answer and label all formulas. 7. Consider an oblique 2D clastic collision on ice: A pebble moving along an 1-axis strikes a stationary 20-kg granite curling rock. After the collision, the pebble bounces back at 20° below the r-ax. A: See Answer.
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(a) Determine the experimental van't Hoff factor for this solution. (b) On the basis of your understanding of intermolecular forces, account for its value. Solution: 1) Let us assume the percentage is w/w (and that it is an aqueous solution) and calculate the molality: 5.00% means 5.00 g of acetic acid and 95.0 g of water.
Calculator Use. Temperature conversions are performed by using a formula, which differs depending on the two temperature scales you are converting between. For example, to convert 50 degrees Celsius (centigrade) to Fahrenheit, we plug our numbers into the formula as shown below: F = C * 9/5 + 32. F = 50 * 9/5 + 32. F = 90 + 32.
Jul 01, 2021 · Solution. To find the temperature change elevation of a solvent by a solute, use the freezing point depression equation: ΔT = iK f m. where. ΔT = Change in temperature in °C. i = van 't Hoff factor. K f = molal freezing point depression constant or
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Apr 27, 2018 · Convert the dilution factor to a fraction with the first number as the numerator and the second number as the denominator. For example, a 1:20 dilution converts to a 1/20 dilution factor. Multiply the final desired volume by the dilution factor to determine the needed volume of the stock solution.
