If a calibration curve of absorbance vs procaine hydrochloride concentration (mol l') is linear with the equation y = 24x for the derivatised procaine, what is the value of the molar absorptivity coefficient (emolar)? assume that a cuvette with a pathlength of 3 cm was used. (1 mark) y=24 emolar = _ l molo

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

Can any one me on number 4? i do know that it’s not a cause i gotten that wrong on the first try.