prelab_3 - Answer Yes No Either/Or 1 points Question Salts...

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Multiple Choice 1 points Question In part III (Determining the Absorption Spectrum of the Colored Nitrate Solution): what is used as a reference solution? Answer Tap water distilled water empty cuvette no reference Multiple Choice 1 points Question According to the protocol, what wavelength should be used for collecting the data for the absorbance as a function of concentration? Answer Wavelength of maximum absorbance for a particular colored salt solution any wavelength as long as it is in the instrumental range wavelength of minimum absorbance 420 nm Either/Or 1 points Question Ionic salts tested in this experiment are all nitrates Answer Yes No Either/Or 1 points Question % transmittance is calculated as the ratio of the intensity of light transmitted by the sample over the incident light intensity, multiplied by 100. Answer Yes No Either/Or 1 points Question Mathematically, absorbance is just a reciprocal of transmittance
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Unformatted text preview: Answer Yes No Either/Or 1 points Question Salts formed by transition metals are mostly colored Answer Yes No Either/Or 1 points Question Salts formed by alkali metals and alkali earth metals are colored Answer Yes No Multiple Choice 1 points Question The number of solutions tested by each team is . .. Answer 8 4 16 32 Multiple Choice 1 points Question According to the protocol, how many solutions need to be prepared for the measurements of absorbance as a function of concentration for each particular salt? Answer 3 6 1 as many as needed to get reliable results Multiple Choice 1 points Question When determining the spectrum of the white light, what is the total wavelength interval tested in the experiment? Answer 420 – 680 nm 420- 540 nm 540-680 nm 540- 600 nm...
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This note was uploaded on 05/03/2010 for the course CHEM chem136 taught by Professor Staff during the Spring '10 term at Maryland.

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prelab_3 - Answer Yes No Either/Or 1 points Question Salts...

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