Chemistry, 30.01.2020 14:59, rwbrayan8727

Supply the volume of the insoluble substance from the displaced liquid.

displaced liquid: 1.724 l

volume: ? cm^3

can someone explain to me how to do this .

Answers: 3

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The volume of the insoluble substance is 1724mL which equals 1724cm³. We know this since the displacement of water is how much it rose from its original height which had to have come from the substance added. I am going to scale down your example so that I can explain it in a lab setting. Say you are tasked with finding the volume of a given insoluble substance with only a graduated cylinder and water. first you need to fill up the graduated cylinder with enough water so that you know the volume of water is greater than what the volume of the substance. lets say you decide on 3.00mL and when you added the substance the volume in the graduated cylinder increased to 4.724mL. This is telling us that the displacement of water was 1.724 mL which means the volume inside the graduated cylinder increased by 1.724mL. The increase in volume could not have come from anything but the substance added so we can say the substance has a volume of 1.724. (1.724mL substance +3.00mL water=4.724mL total)
1mL=1cm³
I hope this helps.

answered: Guest

7is b8 is d9 is c10 is a11 is d

answered: Guest

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.