How many moles of NaCl are produced from 2.8 moles of Na3PO4? -2.8 moles Naci
-0.93 moles Naci
-491.4 g NaCl
-8.4 moles NaCl

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Non renewable resources like petroleum eventually

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