How many moles is 2.50 grams of oxygen?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

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

Draw the structure for 5-isopropyl-2-methyl-3-nonene