Tim and jim finished their lab experiment earlier than their classmates. what should they do while they wait for the others to finish? a. look for an interesting experiment in their lab manual and perform that experiment b. grab a snack out of their backpacks and eat it in the lab area c. look over their answers to the lab questions and check for errors d. bring their math textbooks to the lab area and finish tonight's homework

Is this a single replacement reaction or there is no

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

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.