The reaction 2A —-> B is first order in A with a rate constant of 2.8 x 10^-2s^-1 at 80C. How long (in seconds) will it take for A to decrease from 0.700 M to 0.110 M?

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

How many moles of oxygen react with 12 moles of aluminum

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o