Which of the following compounds is soluble in water?
A) CaS
B) MgCO3
C) PbCl2
D) BaSO4
E) None of these compounds is soluble in water.
Question 2
Hydrogen may have a +1 or -1 charge.
Indicate whether the statement is true or false
Question 3
An object weighs 37.4 kg. What does the object weigh in the English system? 1 lb = 453.6 g
A) 82.5 lb
B) 16,965 lb
C) 0.0824 lb
D) 169.65 lb