which structure does a plant cell have that an animal cell does not have?

How is the composition of a meteorite relevant to finding out the composition of earth's core?

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

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17