What new scientific tool is very useful to observe changes in Landforms? 1. telescope
2. earthquake detector
3. camera
4. satellite

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

What is the most stable monatomic ion formed from nitrogen

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