A compound contains 73.47% carbon, 10.20% hydrogen and 16.33% by mass of oxygen. The compound has a molar mass of 196 g mol'. Calculate the molecular formula

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 conditions most likely produces an unstable isotope?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.