Chemistry, 09.06.2021 17:30, luxmimspcbcxf
Se hace reaccionar 150 ml de disolución de HCl 0,50 M y con 2,5g de hierro del 90% de pureza, determine: A) El volumen de hidrógeno que se obtiene a CNTP. C) El volumen de hidrógeno a 50°C y 0,9 atm. La ecuación general es 6HCl + 2 Fe --> 2FeCl3 + 3H2
Answers: 3
Chemistry, 22.06.2019 14:00, hammackkatelyn60
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 17:00, destinyycooper
What is the approximate vapor pressure when the gas condenses at 70 degrees celsius
Answers: 2
Chemistry, 22.06.2019 20:00, denaemarie02
Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)
Answers: 2
Chemistry, 23.06.2019 00:30, evelynalper08
Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
Answers: 2
Se hace reaccionar 150 ml de disolución de HCl 0,50 M y con 2,5g de hierro del 90% de pureza, determ...
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