Acontainer holds 1 mole of helium gas. the volume of the container is 2 liters and the pressure inside the container is 105.0 kpa. if the volume of the container is decreased to 1.5 liters, what will be the new pressure inside the container?

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

What happens to isotopes that are unstable?

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