How much energy is released when 0.40 mol c6h6(g) completely reacts with oxygen? 2c6h6(g) + 15o2(g) --> 12co2(g) + 6h2o(g)

answers are

-2535
-1268
1258

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

How might this scientific phenomena be explained? a paper clip floats on water.

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.