What information guided Mendeleev as he placed elements in his periodic table

Gold has a density of about 20g/mL. If I had a 60g sample, it should have a volume of about ___mL.

Which nuclide is paired with a specific use of that nuclide? (1) carbon-14, treatment of cancer (2) cobalt-60, dating of rock formations (3) iodine-131, treatment of thyroid disorders (4) uranium-238, dating of once-living organisms

How did Neils Bohr describe electrons in his atomic model?

Most of the mass of an atom is contained: in the electrons in the empty space around the nucleus in the protons in the nucleus

Which contains more molecules of water. 5 liters of ice at 0 degrees Celsius or 5 liters of water at 0 degrees Celsius.

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What is the formula for lithium iodide

Which statement would be the most useful for deriving the ideal gas law? Volume is directly proportional to the number of moles. Volume is inversely proportional to the temperature. Pressure is directly proportional to the volume.

What monomers are used to construct this polymer and where are they found?

How many moles of methane are required to produce 22g co2 after combustion