Match each scientist with the contribution he made to the arrangement of elements in the periodic table. created groups of three elements,
Antoine Lavoisier
each based on similar properties
Dmitri Mendeleev
arranged elements according to their
atomic mass
used patterns to predict undiscovered
elements
John Newlands
+
divided elements into four categories
Johann Wolfgang Döbereiner

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

What is the atomic number of an atom that has 6 protons

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: