Chemistry, 08.12.2020 07:30 ramireznaidelyn

In order to analyze the waste water containing Co2+ from a manufactur- ing process, 1.0 L of water was evaporated to 10.0 mL and then placed in a spectrophotometer tube. The absorbance was found to be 0.30 A
(63% transmittance), Using your calibration curve, calculate the number
of milligrams of Co2 in 1.0 L of waste water,

Answers: 1

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 00:00

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

Answers: 3

Answer

Chemistry, 22.06.2019 16:40

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

Answers: 3

Answer

Chemistry, 22.06.2019 17:20

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.

Answers: 2

Answer

Chemistry, 22.06.2019 20:00

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

Answers: 3

Answer

You know the right answer?

In order to analyze the waste water containing Co2+ from a manufactur- ing process, 1.0 L of water...

Questions