Which of the following best describes a way in which the periodic table is organized?
a) elements are organized in alphabetical order.
b) elements are organized with nonmetals on the left and metals on the right.
c) there is no system of organization in the periodic table.
d) elements are organized into groups with similar properties.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

Calculate the standard enthalpy of formation of liquid methanol, ch3oh(l), using the following information: c(graphite) + o2 latex: \longrightarrow ⟶ co2(g) latex: \delta δ h° = –393.5 kj/mol h2(g) + o2 latex: \longrightarrow ⟶ h2o(l) latex: \delta δ h° = –285.8 kj/mol ch3oh(l) + o2(g) latex: \longrightarrow ⟶ co2(g) + 2h2o(l) latex: \delta δ h° = –726.4 kj/mol

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions