Chemistry, 10.10.2019 05:00 vlactawhalm29
Aparticulate matter sampler was operated for 24 hours at a flowrate of 1.4 m3 min-1. the starting weight of the filter paper before sampling was 2.05 grams. at the end of the sampling period, the filter's weight was 3.84 grams, and the gain in weight was due completely to the particulate matter that had collected on the surface of the filter paper during air sampling. determine the particulate matter concentration, in micrograms per cubic meter (expressed to one decimal place), for the given sampling time.
Answers: 2
Chemistry, 21.06.2019 14:20
Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj
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Chemistry, 21.06.2019 22:30
If you want to create an electrical current, which situation would produce a solution capable of this
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Chemistry, 22.06.2019 07:00
How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough
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Aparticulate matter sampler was operated for 24 hours at a flowrate of 1.4 m3 min-1. the starting we...
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