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B) What are the readings on these graduated cylinders? Include UNITS8,GOmL...

Question

B) What are the readings on these graduated cylinders? Include UNITS8,GOmL

B) What are the readings on these graduated cylinders? Include UNITS 8,GOmL



Answers

Assume that you have two graduated cylinders, one with a capacity of 5 $\mathrm{mL}$ (a) and the other with a capacity of 50 $\mathrm{mL}$ (b). Draw a line in each, showing how much liquid you would add if you needed to measure 264 $\mathrm{mL}$ of water. Which cylinder will give the more accurate measurement? Explain.

Hello. So today we're gonna predict the layering of the following liquid A three D um, when all poor together into the same graduated cylinder. So the first thing to understand is that more dense liquids will fall to the bottom and less dense liquids will rise to the top. No you want to do is to determine the density of each of the liquid. So for a 18.5 grams, divided by the 15 milliliters gives us one point 23 grams per milliliter. All right, B 12.8 divided by 10 gives us one point to eight grim per milliliter. See 1.7 grams per mil a liter and d 2.0, grands per militar. Okay, so now when we've put these liquids into aggression that cylinder, we should find that de is at the bottom, See is on top of it. B is on top of them and a rises to the top

MM. For the given question, they're uncertain. Unity in graduated cylinder is of Plus -0.5 millimeter. Because of this uncertainty, our reading of 25.0 million later, Or a reading of 25 0.5 milli liter are both acceptable, which co relates to Option B and option C.

In this question, we're being asked to identify two different quantities of measurements and then how many significant figures are represented by each? So, first up, we have this graduated cylinder here and we have a water line drawn as such. Now, if we've got the 30 mil leader Mark here in the 40 Mill Leader Mark here and there are four gradations between each of them that means that each one must be going up by two. So we've got 32 34 36 38. This line appears to be at the 32 mil Leader Mark and therefore will identify this measurement as 32 mil leaders. Both of these digits are non zeros. Therefore, they're both significant. So this measurement has two significant figures. Now we move over to the paper clip where were given a centimetre ruler with it and asked to identify how tall is the paper clip in centimeters and again significant figures. So we have a two centimeter line here and a three centimeter line here. And just like over on the graduates cylinder, we've got four gradations between its, which means each one must increase by a value of 10.2. So this paper clip a little tricky, appears to be between the 0.6 gradation and the 0.8 gradation. So I would identify this paperclip as being 2.7 centimeters in height. And just like my reasoning over here, we have to non zero digits, and therefore, once again, we have two significant figures for the height of the paper clip.


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