Im being timed someone pls help
i have 3 minutes
1.) Name a metal and explain how the physical properties of this raw metal help change it into common household items?

2.)What is one chemical property Rb and Cu have in common?

How many neutrons does a atom of cobalt have?

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution