A container holds 3.0 g of hydrogen. if it is evacuated and filled with methane at the same temperature and pressure, what is the mass of methane

True or false an element's reactivity is determined by the number of protons found in an atom of the element

What is an aqueous solution? What is an aqueous solution? An aqueous solution is a homogeneous mixture of a substance with water. An aqueous solution is a dispersoid solution. An aqueous solution is a mixture of a liquid substances.

The atomic number gives the number of: A. Protons. B. Neutrons. C. Electrons. D. Protons and electrons in an ion.

Is Neon a metal, nonmetal, or a metalliod

Choose the element with the highest electronegativity: which one is it? oxygen iron cesium iodine

Peter is 5 ft, 11 inches tall. Paul is 176 cm tall. Who is taller?

Which is the MOST accurate description about how the different types of feedback mechanisms work

What was one of the main benefits to the use of the icebox for cooling food?

How many moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 0.98 atm and a temperature of 373 K?

What are the building blocks