ANYBODY PLEASE HELP!!1) Find the volume of 28 g CO2 at STP? 2) Using your answer in #1 determine the density of carbon dioxide. 3) In the combustion reaction of methane gas : CH4 (g) + ( g) CO2 (g) + 2 H2O (g) 4.0 * 10 exp 23 molecules of CH4 was used. Determine (a ) the moles of CO2 produced b) using your answer in ( a), calculate the volume of CO2 produced at STP c ) the volume of oxygen used in the reaction at STP

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".