Hey I need this done ASAP but the deadline is 3pm central time

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

The pressure in a fluid is affected by which characteristics of that fluid

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