When consumers explicitly agree to share personal information, the agreement is referred to as

What crucial role did Johannes Gutenberg’s movable type printing press play in the transition between the Late Medieval and modern worlds?

Dakari purchased a coffee maker from Amazon. As he was completing his purchase, the site suggested some brands of coffee for him to purchase. This is an example of

A block of clear acrylic sits on top of a block of glass. A ray of light traveling in the glass is incident on the acrylic/glass interface at an angle of [t1] degrees with respect to the normal. The light has wavelength [wa] nm in the acrylic and [wg] nm in the glass.  What is the refracted angle into the acrylic as measured from the normal to the interface? Give your answer in degrees and round to one decimal place. Show all work starting from Snell’s law to receive full credit.

Which of the following terms best describes species from an element that have the same number of protons and electrons but different numbers of neutrons?

Everyman is a ____.

The figure shows the position of an object as a function of time.  During the time interval from time t= 0 s  and time t= 9 s (a) what is the length of the path the object followed? (b) what is the displacement of the object? distance and displacement.jpg

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An electrochemical cell is constructed based on the oxidation of cadmium (Cd) metal and the reduction of lead (Pb2+) ions.  Solutions of 1.00 M cadmium nitrate and lead nitrate were used to construct the electrochemical cell.  If the measured voltage in the cell is positive where is the cadmium ion located?

What is the cell potential for an electrochemical cell at 298 K with a copper metal anode immersed in a O.30 M copper sulfate and a copper metal cathode immersed in 1.6 M copper sulfate?