Studies seem to indicate that small daily doses of aspirin lower the risk of
A) heart attack.
B) anthrax.
C) cancer.
D) polio.
Question 2
When the following equation is balanced, the coefficient of HCl is ________. CaCO3 (s) + HCl (aq) CaCl2 (aq) + CO2 (g) + H2O (l)
A) 1
B) 2
C) 3
D) 4
E) 0
Question 3
Which pair of elements is most apt to form an ionic compound with each other?
A) barium, bromine
B) calcium, sodium
C) oxygen, fluorine
D) sulfur, fluorine
E) nitrogen, hydrogen