A student has found that her sample of potassium nitrate is contaminated with small amounts of a green solid. She picks out a small piece of the
green solid and finds that it is insoluble in water.

a) describe now you would make a pure sample of potassium nitrate from the impure mixture.

Which are causes of mechanical weathering? check all that apply.oacid raino plant growtho animal actionso carbon dioxideo pressure release

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.