Chemistry
Chemistry, 27.07.2019 03:20, golderhadashaowtatz

The concentration of [fe3+]i for trial 3 is m.
the concentration of [fe3+]i for trial 1 is m.
the concentration of [fe3+]i for trial 2 is m.

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Chemistry, 11.10.2019 00:00, jackfrost5
Astandard solution of fescn2+ is prepared by combining 9.0 ml of 0.20 m fe(no3)3 with 1.0 ml of 0.0020 m kscn . the standard solution had an absorbance of 0.480 . fe3+(aq)+scn−(aq)↽−−⇀fescn2+(aq) a trial solution was made in a similar manner, but with a more dilute fe(no3)3 reagent. the initial scn− concentration, immediately after mixing, was 0.00050 m . this trial solution had absorbance of 0.220 . what is the equilibrium concentration of scn− in the trial solution?
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Chemistry, 11.10.2019 17:30, Alexandram2163
Astandard solution of fescn2 is prepared by combining 9.0 ml of 0.20 m fe(no3)3 with 1.0 ml of 0.0020 m kscn. the standard solution had an absorbance of 0.510. a trial solution was made in a similar manner, but with a more dilute fe(no3)3 reagent. the initial scn– concentration (immediately after mixing) was 0.00080 m. this trial solution had absorbance of 0.240. what is the equilibrium concentration of scn– in the trial solution?
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Chemistry, 19.10.2019 22:30, milamdaniela
In the laboratory, a student investigates the effect of concentration on the reaction between hcl(aq) and mg(s), changing only the concentration of hcl(aq). data for two trials in the investigation are shown in the table below. trial 1 volume of hci (aq): 50.0ml concentration of hci (aq): 0.2m mass of mg(s): 0.1g reaction time: 48 seconds trial 2 volume of hci (aq): 50.0ml concentration of hci (aq): 0.2m mass of mg(s): 0.1g reaction time: 48 seconds compared to trial 1, what is the expected reaction time for trial 2 and the explanationfor that result? (1) less than 48 s, because there are fewer effective particle collisionsper second (2) than 48 s, because there are more effective particle collisions per second (3) more than 48 s, because there are fewer effective particle collisions per second (4) more than 48 s, because there are more effective particle collisions per second
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The concentration of [fe3+]i for trial 3 is m.
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