Values for the molar mass of hydrogen, oxygen, and water molecules are given in the table below. What mass of water is formed when 2 moles of hydrogen react with 1 mole of oxygen to form water?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Stage in which a typical star has completely stopped fusion