Chemistry, 30.03.2020 22:04 michaela134
Debbie and Ben are performing a frog dissection in their biology class. As a safety precaution, Debbie and Ben must do all of the following EXCEPT
A) wear a lab apron and goggles.
B) pre-wash the frog in tap-water to remove excess preservative.
C) read all instructions in the lab manual before beginning the dissection.
D) close the windows and doors to the classroom to avoid the escape of fumes.
Answers: 3
Chemistry, 22.06.2019 13:00
Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.
Answers: 3
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 14:30
For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2
Answers: 3
Chemistry, 22.06.2019 15:40
Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n
Answers: 2
Debbie and Ben are performing a frog dissection in their biology class. As a safety precaution, Debb...
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