Which two planets have the same density ?

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

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

What is the standard unit of measure for acceleration?