2. Given the balanced equation representing a reaction:
Zn(s) + 2HCl(aq) - H2(g) + ZnCl2(aq)
Which set of reaction conditions produces Helg) at the fastest rate?
a. a 1.0-9 lump of Zn(s) in 50 mL of 0.5 M HCl(aq) at 20."
b. a 1.0-g lump of Zn(s) in 50 ml of 0.5 M HClag) at 30.C
c. 1.0 g of powdered Zn(s) in 50. mL of 1.0 M HCl(aq) at 20.00
d. 1.0 g of powdered Zn(s) in 50. ml of 1.0 M HClag) at 30.C

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

What shape would a molecule with two bound groups and two lone pairs have?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.