Changing in boiling point is directly proportional to the a) molarity of solution b) percent by volume of solution c) molarity of solution d) percent of solution

What is important to study for nios grade 12 chemistry? i have only one month left.

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

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