Chemistry, 17.01.2021 01:50 azeezat728
(PLEASE HELP) A 300 ml water sample was taken from a stream in Mexico City and analyzed for dissolved oxygen. Using the Winkler method, 58.88 ml of 2.42 x 10^-3 M sodium thiosulfate titrant was required. Calculate the dissolved oxygen in the water and express this as mg/L.
Answers: 3
Another question on Chemistry
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (Ξ΄ch< (c14h10,s)=β7061 kj molβ1.)
Answers: 3
Chemistry, 22.06.2019 19:50
If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?
Answers: 2
Chemistry, 23.06.2019 06:40
8. how much enthalpy/heat is transferred when 0.5113gof ammonia (nh3) reacts with excess oxygen according| to the following equation: 4nh3 +502 - 4n0+ 6h20ah = -905.4j
Answers: 1
You know the right answer?
(PLEASE HELP) A 300 ml water sample was taken from a stream in Mexico City and analyzed for dissolve...
Questions
Biology, 06.07.2019 20:00
Physics, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
Chemistry, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
History, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
Mathematics, 06.07.2019 20:00
