Which of the following is not an amphoteric substance? a) lead(II) oxide
b) aluminum hydroxide
C) iron(ill) oxide
d) zinc oxide

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe

Which sample at stp has the same number of atoms as 18 liters of ne at stp

What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3? a. 0.42 g b. 2.4 g c. 42 g d. 260 g