Ahouse wall which is 2.75 m high and 10 m wide is made of 110 mm thick bricks on the outside, 10 mm thick plasterboard on the inside and 100 mm thick insulation in between. on the inside of house, air conditioning keeps the surface of the plasterboard at 18°c, whereas on the outside, the surface of the brick wall is exposed to still air at 0°c. determine the rate of heat loss through the wall notes thermal conductivities of materials in wall kplasterboard 0.17 wm-1k-1, kinsulation = 0.04 wm1k-1 and kbrick = 0.72 wm1k-1 properties of air at atmospheric pressure can be found in the back of the test script (page 9) hint: start by guessing the outside wall temperature in the range of 2-4°c

Calcium chloride +gold(1) oxide—>

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining