PHYSICAL SCIENCE>CUSTOM PKG<
PHYSICAL SCIENCE>CUSTOM PKG<
11th Edition
ISBN: 9781308956152
Author: Tillery
Publisher: MCG/CREATE
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Chapter 10, Problem 1II
To determine

The effect of temperature on brightness of a light stick as well the light stick which produces light for the longest duration through an experiment.

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A 60.0 g of CaC2 reacts with water to produce C2H2 and 81.2 g of Ca(OH)2. The reaction between these two substances are chemically written as:   _______ CaC2 + ______ H2O → _____ C2H2 + _______ Ca(OH)2 Balance the chemical equation. Calculate the molar mass of CaC2 and Ca(OH)2? What is the theoretical yield of Ca(OH)2? What is the percent yield of this reaction if the actual yield of Ca(OH)2 exceeds 2.1 g ?
Part B. Write a balanced molecular equation describing each of the following chemical reactions. You may use the internet to search for the chemical symbol of each substance.   B. Gaseous butane, C4H10, reacts with diatomic oxygen gas to yield gaseous carbon dioxide and water vapor.
Justin is making a snack. He toasts a piece of bread and spreads peanut butter and jelly on it. Then he cuts an apple into several slices and adds these to his plate. Next, Justin mixes a scoop of lemonade powder into a glass of water, mixes it, and adds ice. How many chemical changes occurred in this scenario?

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