Which of the following is NOT a molecule?
(1 Point)
A .Iron

b .salt

c. sand

D. sugar

Drug abuse will not lead to physical and psychological dependence. true or false ?

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

In chile, the deepest earthquake occurred at 61.7°w longitude at a depth of 540 km. if the rocks at the focus began subducting 10 million years ago and are now 1000 km from their original position, what is the average rate of subduction in cm/yr?