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A calibration curve for absorbance versus the concentration of the chemical indicator crystal violet is found to have a slope of 19. If a sample of unknown concentration has an absorbance of 1.32, what is the concentration in the unknown sample?
calculate the number of tons of carbon dioxide and sulfur dioxide produced by the plant during the year. (b) If 55% of SO2 could be removed by reaction with powdered CaO to form CaSO3, how many tons of CaSO3 would be produced.
Two moles of potassium chloride and three moles of oxygen are produced from the decomposition of two moles of potassium chlorate, KClO3(s). Write the balanced equation. How many moles of oxygen are produced from 12 moles of potassium chlorate?
Based on Liquid Chromatography, how can I changed if the capacity value and selectivity value and resolution value is not in the proper range?
0.0010 mg of H, 0.0116 mg of C, and 0.0310 mg of O. It was also determined that the unknown compound had a molecular weight of 90.0 g/mol.
Standard Atmos. Pressure is 90.0 atm. What are the Partial Pressures of the Gases in mmHg?
Nitrogen dioxide and water react to produce nitric acid HNO3, and nitrogen oxide: 3NO2(g) + H2O(l) -------- 2HNO3(aq) + NO(g)
In a controlled greenhouse at 30.0C and 1.0 atm a crop of seeding tomato plants was found to consume 380 L of carbon dioxide gas during photosynthesis. Assuming 100% yield what a mass of glucose was produced for the growing plants?
Where on the modern periodic table would you probably find an element that is a dense gas at room temperature? EXPLAIN 3) What should be the most metallic element?
The piece of iron with a mass 102.9g was submerged in a graduated cylinder filled with water. The initial level of water was 20.0 ml. The density of iron is 7.86 g/ml.
a gas has a volume of 95 mL at a pressure of 930 torr. what volume will the gas occupy if the pressure is increased to 970 torr?
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
An ionic compound forms when aluminum (Z = 13) reacts with iodine (Z = 53). If a sample of the compound contains 1.23 x 1019 aluminum ions.
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