Find the Density of the water. Density = Mass/VolumeIn other words, how much matter is crammed into a given space Here is some information you will need. The data has been collected for you.
Empty graduated cylinder 41.6 grams
Graduated cylinder containing 82 ml of water 123.1 grams
Mass of the water ? grams
Density of the water ? g/mL
2007-09-14 11:15:15 · 4 answers · asked by Pratikshya M 1 in Science & Mathematics ➔ Chemistry
Come on, too easy
Mass of water = Mass of cylinder with water - mass of empty cylinder
then:
Density = mass of water(grams)/volume of water (in mL)
I gave you the answer, but Show some effort by doing the numbers.
2007-09-14 11:22:53 · answer #1 · answered by Manuelon 4 · 0⤊ 1⤋
This is not the best way to measure the density of water. It will give you a very rough density value of 1 g/ml. With that sort of precision, many other liquids would also have a density of 1 g/ml.
You need a method with more precision. You need to use a pycnometer. It is a vial with a very precise volume, which it is known precisely for 20.0 C. You need to calibrate the volume usually with a known liquid, and correcting for the temperature at which you do the measurement. Usually the volume can be know with at least 4 to 5 significative numbers. Yo also need to know the temperature exactly with at least +-0.2 precision.
To find the weight, you need to use an analytical balance with at least 4 digits after the unit (0.0001g or 0.00001g).
Now we can really talk about the density when you then put water in it and redo the measurements with the calibrated volume and the precise weight.
2007-09-14 11:43:43 · answer #2 · answered by Raymonator 2 · 0⤊ 0⤋
to get the mass of the water simply subtract the 123.1 grams of water and graduated cylinder from the 41.6 grams of the graduated cylinder giving you 81.5 grams of water.
Take that 81.5 grams of water and devide that from the 82mL which will give you about 1g/mL as the density.
2007-09-14 11:24:38 · answer #3 · answered by T Hobbes 2 · 0⤊ 0⤋
1...123.1g - 41.6g = 81.5g mass of water.
2...81.5g water per 82mL of water.
Density = mass/volume.
= 81.5/82 = 0.994g/mL...slightly reduced density indication the water is warmer (or cooler) than 4°C...its maximum density temperature.
2007-09-14 13:14:47 · answer #4 · answered by Norrie 7 · 0⤊ 0⤋