ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST What did Ernest Rutherford's model of an atom look like?

plum pudding
a random mixture of protons, neutrons, and electrons
a single, individual atom
a nucleus surrounded by electrons

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

Consider this initial-rate data at a certain temperature for the reaction described by

May someone me with these science questions