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So water increases in volume by 9% when it freezes, so we merely need to add 9% to 96.0mL to see how much it will expand and if that volume will be more than the 100mL the water has to expand into. So we just need to find the percent of increase from one to the other, so we find the amount of volume gained and divide by the original volume: 1.090-1.000 = 0.090 0.090/1.000= 0.090 x 100 = 9%
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If the water freezes will the container rupture?įrom the previous question, we see that water at zero degrees has a volume of 1.000mL and frozen water at the same temperature has a volume of 1.090mL. A sealed glass container with a capacity of exactly 100mL contains 96.0mL of liquid water at 0 ☌. V=1.000g/0.9999gmL^-1 = 1.000mL is our volume for water at zero degrees celsiusĢ. V=1.000g/0.9168mL^-1 = 1.090mL is our volume for ice at zero degrees celsius So we move v to the left and d to the right, so the equation is v=m/d, which looks like: Before we mess around with our equation, let's plug everything in to gain a better understanding of where everything will go:ĭ=m/v, starting with ice, the density is 0.9168 mL^-1 and the mass is 1.000g so our equation looks like: So the question is asking us to find volume, not density, so we'll be doing some rearranging. What are the volumes of 1.000g of ice and 1.000g of water at 0 ☌? The density of ice at 0 ☌ is 0.9168gmL^-1, and that of liquid water at 0 ☌ is 0.9999gmL^-1. Subtract volume 1 from volume two, the difference between these volumes is the volume of the solid.Īnd that's basically all we need to work the problems in this lab: d=m/v and the procedure for determining volume by displacement. add weighed sample of solid to the liquid in cylinder, measure and record volume 2. pour liquid, such as water, into graduated cylinder, measure and record volume 1. Density is a physical property of matter which is dependent on volume and mass, therefore:ĭ=m/v or density is equal to mass divided by volumeĭensity of a liquid or solution is typically reported in units of grams per milliliter, or g mL^-1ĭensity of a solid is reported in units of grams per cubic centimeter, or g cm^-3īecause 1mL is equal to 1cm^3, these units are interchangeable.