Awater sample consists of the following cadmium species and their percentages of the total cadmium concentration: cd2 (36 %); cdhco3- (14 %); cdcl- (25 %); and cd(oh)2 (25 %). what percentage of cd is toxic to aquatic organisms

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.