Calculate the mass of each of the following. (a) a sphere of gold with a radius

Question

Calculate the mass of each of the following. (a) a sphere of gold with a radius of80.0 cm [the volume of a sphere with aradius r is V =(4/3)r3; the density of gold =19.3 g/cm3]
1 g
(b) a cube of platinum of edge length 0.040 mm (the density of platinum = 21.4g/cm3)
2 g
(c) 10.0 mL of ethanol (the density ofethanol = 0.798 g/mL)
3 g (a) a sphere of gold with a radius of80.0 cm [the volume of a sphere with aradius r is V =(4/3)r3; the density of gold =19.3 g/cm3]
1 g
(b) a cube of platinum of edge length 0.040 mm (the density of platinum = 21.4g/cm3)
2 g
(c) 10.0 mL of ethanol (the density ofethanol = 0.798 g/mL)
3 g

Explanation / Answer

1 4/3 *3.14 *(80)^3 * density (19.3)will give you grams 2 .040mm = .004 cm .004^3*21.4 3 10*.798 take you sigfigs and thats the answers

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