Activity 3.3 Determining Specific Gravity (SG) Course/Section Date: your money A

Question

Activity 3.3 Determining Specific Gravity (SG) Course/Section Date: your money A Imagine tha yo want to lsuy a leis of freakfast cereal and ges the noos cereal oa You lave nartonedy are sold in boxes of die esact sanve sine and price. The loses are search to two brands of ce cardboard and hune no labeling of weight. Withut cereal thar opening thes, how can you sell whichh comtains the m atone, equalsized samples of ditfesent minerals ofhen have different weights. I5 vou Lir the ce ses above, ample in one hand and an equal-sized sample of a diflerent mineral in the human balance and detect that one isay be heavier than the other. This is called relative densities of two objects. Heft the three mineral samples provided to on the lines be low to indicate the sample densities from least dense to mst other hand, then is is possible to act lihe a hefting, and it is used to estimane the you, and tlhen write sample sumbers/leve lost dense Least In more exact terns, density is takes up in cubic centimeters, cm'). Density is usually expressed in units of g that is 20 cm by 25 cm by 5 cm and has a mass of 0.453 kg? Show your work a measure of an object's mass (in kilograms, kg) divided bby its volume (Iow mch seoe g/cn. What is the density of a bos of cereal ometimes use specific gravity to help identily an sunknown mineral. Specific gravity is the ratio of the density of distilled liquid water, which we will assume to be 1 g/cm. Specific gravity is a density of a mineral divided by the dimensionless number. For example, the density of quartz is 2.6g/cm,so the specific granvity of quartz is 26 Return to the three mineral samples that you hefted above, and do the foll whaile they are still dry), determine and record the mass of cach sample in grams in Table A3.3.1 Use the water displacement method to measure and record the volume of each sample (Fig. 3.18). Recall that 1 fd mililiter (ml. or iml on the graduated cylinder) equals 1 cubic centimeter l. First 3. Calculate the specilic gravity of each sample 4. Identily cach sample based on the list of specific gravities of some common SG OF SOME MINERALS minerals (Table A3.3.2) 2.1 Sulfur 2.6-2.7 quartz 3.0-3.3 fluorite 3.5-4.3 garnet 4446 barite 49-52 pyrite Volume in cubic cm Specific Mass in grams (g Sample Mineral name 88.90 native co 93ative Table A33.2 in Heahing the s

Explanation / Answer

A. By examining their relative weights. You can use hefting method.

C. here, mass of the cereal box = 0.455 kg = 455 grams.
   volume of the cereal box = 20* 25* 5 = 2500 cubic cm.
   therefore the density of the ceral box = mass/ volume
   = 455/ 2500
      = 0.182 gram per cubic cm.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.