A110 g sample of copper (ccopper = 0.385 j/g * degrees celsius) is heated to 82.4 degrees celsius and then placed in an insulated container of water (cwater = 4.18 j/g * degrees celsius) at 22.3 degrees celsius. the final temperature of the water and copper is 24.9 degrees celsius. what is the volume of water? (dwater = 1 g/ml).

What shape would a molecule with two bound groups and two lone pairs have?

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.

Who discovered a pattern to the elements in 1869?