An atom of a certain element has 54 protons, and 54 electrons, and a mass number of 131. At room temperature this element is a very stable gas. How many neutrons are in this atom?

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

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation