Online Math tests require you to do calculations on your own…

Online Math tests require you to do calculations on your own paper before selecting or typing in your answers….. even multiple choice question! You were instructed in live class that you must bring a blank paper, pencils/pens and an eraser to EVERY test you write in this Math course.   If you brought these things and you show them to the camera in the first 2 minutes of your test you get marks!   Did you hold up and show the camera your: Blank Paper? [yes2] Pencil or Pen? [yes3] Eraser? [yes4]   Do not include capitals or punctuation….  just yes or no.

The metal A has a density of 12 g/cm3 and a molar mass of 47…

The metal A has a density of 12 g/cm3 and a molar mass of 47 g/mole. It’s reduction half reaction look like this:  A3+ + 3e- –> A How long would it take to create a layer of solid A that has a depth of 0.03cm on one side of a 212cm x 85cm plate if you have a current of 45 A?

If you used a standard calorimeter with 2.5L of water, and t…

If you used a standard calorimeter with 2.5L of water, and the temperature of the water changed from 18 degrees Celsius to 23 degrees Celsius, the specific heat capacity of water is 4.18 J/goC a) was the reaction endothermic or exothermic (explain how you know and what it implies about the reactants and products)? b) how much energy was released/absorbed?