What is the molarity of 2 L solution that contains 1.25 g dissolved C6H12O6? (6 atoms of Carbon, 12 atoms of Hyrdrogen, 6 atoms of oxygen)

Which statement is best described as a atom

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand