What is the source of water necessary to induce the production of magma in a subduction zone?
A. subducted ocean water
B. ocean water incorporated into crust at divergent plate boundaries
C. mantle-derived magmatic waters
D. meteoric water
Answer: B
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Which of the following can be used as a fungal growth inhibitor?
A) calcium propionate B) sodium benzoate C) both a and b D) neither a nor b
Which of the following buffers will have the highest pH?
A) a solution containing 0.20 M HC2H3O2 and 0.20 M NaC2H3O2 B) a solution containing 0.25 M HC2H3O2 and 0.15 M NaC2H3O2 C) a solution containing 0.15 M HC2H3O2 and 0.25 M NaC2H3O2 D) They all have the same pH.
What is the speed of sound waves in water?
A) 1,500 m/sec B) 5,000 m/sec C) 3,200 m/sec D) 10,994 m/sec