Biology, 16.10.2020 23:01 santos200154
You are given a 50 g sample of a gray mineral with a metallic luster and easily visible ortho-rhombic crystals. You are able to scratch it with your thumbnail, but doing so requires a considerable amount of pressure. When you suspend it in water from a spring scale, the spring scale reads 39 g. It leaves a gray streak on a porcelain tile. What mineral is this probably a sample of?
Answers: 1
Biology, 22.06.2019 11:00, braxtengames
Which measure of an earthquake depends on how close you are to the focus?
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Biology, 22.06.2019 18:30, ellamai16
On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?
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You are given a 50 g sample of a gray mineral with a metallic luster and easily visible ortho-rhombi...
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