Chemistry, 21.09.2019 04:30 venegas122916
Which element has 32 protons in its nucleus? phosphorus cobalt germanium sulfur
Answers: 1
Chemistry, 22.06.2019 14:00
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.
Answers: 3
Chemistry, 22.06.2019 15:30
The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
Answers: 1
Chemistry, 22.06.2019 16:50
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
Which element has 32 protons in its nucleus? phosphorus cobalt germanium sulfur...
Mathematics, 13.03.2020 05:01
History, 13.03.2020 05:01
Mathematics, 13.03.2020 05:01
Mathematics, 13.03.2020 05:01
Mathematics, 13.03.2020 05:02
Mathematics, 13.03.2020 05:02
History, 13.03.2020 05:02