In this lab you will produce oxygen and water from hydrogen peroxide (h2o2). write a balanced reaction equation for this reaction.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Why are pipes bursting in the in extremely cold weather?

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.