27. How deep must an inverted drinking glass be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half? A) 76 cm
B) 10.3 m
C) 14.7 m
D) 20.6 m

Consider the point on the plot where 10.0 g of naoh have been added. what amount of naoh, in moles, has been added? 0.308 mol fecl3 initially present

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false