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Explanation:

Which chemical would you predict to move the fastest (and thus go furthest in a given time period) through air?

Multiple Choice

acetone (molecular weight = 58 g/mol)

ammonia (mw = 17)

ethanol (mw = 46)

hydrochloric acid (mw = 36)

isopropanol (mw = 60)

Explanation:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.