The enthalpy of vaporization of h2o at 1 atm and 100 c is 2259 kj/kg. the heat capacity of liquid water is 4.19 kj/kg-c, and the heat capacity of water vapor is 1.9 kj/kg-c. h20 at 10 bar boils at 179.9 c. what is the enthalpy of vaporization of h2o at 10 bar? you can neglect the effect of pressure. o 2076 kj/kg o 1924 kj/kg o 2259 kj/kg o 2442 kj/kg o2594 kj/kg o none of the above

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Acontrol during an experiment. might change remains constant does not exist does change

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.