basalt: 38.7g Granite: 33.1g I don\'t have the volume, but the lab professor sai
ID: 107730 • Letter: B
Question
basalt: 38.7g Granite: 33.1gI don't have the volume, but the lab professor said it was ok to try it out without actually having done this lab. I am just looking for help to see what I am doing wrong.
ACTIVITY 1.6 Isostasy and Earth's Global Topography Date: le of basalt. A. nawrly yew caw, weigh (grams) and determine (by water displacement. FIGURE 1.9) of a sampl the volume of g/cm' Then Add your data to the basal density chart below. densiry of your sample of basalt to ten determine che average densiy of basalt using all ten lines of sample data in the basalt density chart. you displacement, FIGURE 1.9) ofa sample of granite. Add your data cam, weigh (grams) and determine the volume (by water to tenths g/cm Then, to the granite density chart Calculate the densiry of your sample of granie determine the average density of granite using all ten lines of sample data in the granite chart. B. BASALT DENSITY CHART Sample volume lom) 3,0 3,0 15 10 3.1 11 Average dersiny of basat ar B. GRANITE DENSITY CHART Sample Density (g/cm 2.7 10 27.6 31.1 2.9 2.8 2.9 2.8 2.6 10 Average density of granite
Explanation / Answer
in that case you do know the sample density because without that this cant be calculated and you didnt share in the uploded question so if you have the density you can use the following formula to determine the smaple volume :
that is : D= m/v
well for finding the density or volume we use water displacement method .
water displacement method-
1- find the mass of the sustance using the balance.record the mass
2- fill a graduated cylinder large enough to hold the insoluble,irregular solid with water to a measured level .record the colume of water.
3- submerge the solid in the graduated cylinder's water ,tap the cylinder gently to allow trapped air bubbles to escape .record the volume of water and submerged object.
4-subtract the volume of water from the volume water with the submerged object.
5-divide the initial mass measurement by the voule to determine the density of the object.
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