Pure substances and solutions are alike because they: are both homogeneous can both be homogeneous or heterogeneous are both heterogeneous are both types of mixtures

As you move from right to left on the periodic table the atomic radius fill in the blank

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability