What is the formula weight of aluminum sulfate, Al2(SO4 ) 3?
A) 75.1 amu
B) 150.2 amu
C) 342.2 amu
D) 369.7 amu
C
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In the natural world, where humans are not dominant, there is essentially no waste
Indicate whether the statement is true or false
Which of the following statements describes the mid-Holocene climatic optimum?
A. Continental ice sheets began to melt. B. Alpine glaciers began to advance down river valleys. C. Average temperatures were colder than at present. D. The climate favoured the development of certain plants.
The Mesozoic Era is known as the age of ____
A)reptiles B)dinosaurs C)Pangaea D)angiosperms E)flowering plants
Why does adding water to sand increase the angle of repose for the material?
A) Water increases friction. B) Water increases cohesion. C) Water increases the oversteep angle. D) Water decreases friction.