Chemistry, 02.01.2020 20:31 zavadskipaulo1oyt4og
The van deemter equation describes plate height in terms of constants a, b, c, and the linear velocity, ux. which statement is not true for the van deemter equation?
a) a takes into account multiple pathways through the column. the value of a is column specific and independent of linear flow.
b) b takes into account longitudinal diffusion of the analyte in the mobile phase. the value of b is column specific and the impact of b on the plate height is inversely proportional to the linear velocity. x x + cu u b h » a +
c) c takes into account equilibrium time between the stationary and mobile phase. the value of c is column specific and the impact of c on plate height is proportional to the linear velocity.
d) to minimize plate height, the optimal flow rate is the maxima for the plot of versus flow rate.
e) linear velocity is the flow rate of the mobile phase.
Answers: 2
Chemistry, 22.06.2019 15:30
What best discribes the relationship between wavelength and frequency in a electromagnetic wave
Answers: 1
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
Chemistry, 22.06.2019 22:00
Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.
Answers: 1
Chemistry, 23.06.2019 00:50
50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)
Answers: 3
The van deemter equation describes plate height in terms of constants a, b, c, and the linear veloci...
English, 30.11.2020 20:30
Mathematics, 30.11.2020 20:30
Biology, 30.11.2020 20:30
Mathematics, 30.11.2020 20:30
Biology, 30.11.2020 20:30
English, 30.11.2020 20:30
Mathematics, 30.11.2020 20:30
Mathematics, 30.11.2020 20:30