2.56g of impure copper(ii) sulphate sample was dissolved in water and precipitated with excess copper hydroxide solution. if 1.245g of copper (ii)hydroxide was obtained, what is percentage of copper(ii) sulphate in the impure sample

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?