Helium has an atomic number of 2 and atomic mass of 4. explain.

How to find molarity 1. mass 2. molar mass 3. volume of water added?

Which trait would most likely lead a scientist to investigate a blood-thinning agent in the saliva of vampire bats? creativity curiosity diversity skepticism

An IV bag is labeled as 0.800% w/w sodium chloride in water solution with a density of 1.036g/mL. What is the concentration of sodium chloride in the solution expressed in molarity, molality, and mole fraction?

Explain how Seafood Watch promotes environmentally responsible fishing practices adaptation speciation extinction death

Which option should a person avoid doing in order to better protect the quality of watersheds? A) People should remove native plants around watersheds. B) People should use an alternative for synthetic pesticides.

How do you know when it's the same element?

What is the difference between a pure substance and a mixture? How are the atoms different?

Best example of an isolated system in chemistry apex

Write the net ionic equation for the chemical reaction shown. Include physical states. HClO2 (aq) + NaOH (aq) ⟶H2O (l) + NaClO2 (aq)

Which if the following is an example of a stratovolcano?