Help me with it this please

What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions