Uestion 28 of 51
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sally wants to determine the volume of water that is needed to fill her ice-cube tray. she cannot find a measuring cup, but she
has a ruler, so she measures the length, the width, and the depth of one of the holes in centimeters. her calculation of the total
volume is shown. classify each number as exact or not exact.
3.2 cm x 2.8 cm x 2.5 cm
1 cube
1 ml
12 cubes
x 1 cm3 *
= 268.8 ml/tray
1 tray
6-12 pm
7212019

dynamic equilibrium is the answer.

2b2t

explanation:

2b2t

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.