Chemistry, 24.09.2019 00:00 jebjeb6135
An isotope of mercury has 80 protons and 120 neutrons. what is the mass number of this isotope?
40
80
120
200
Answers: 1
Chemistry, 22.06.2019 13:00
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.
Answers: 1
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 15:30
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)
Answers: 1
An isotope of mercury has 80 protons and 120 neutrons. what is the mass number of this isotope?
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Chemistry, 24.04.2021 02:10
Health, 24.04.2021 02:10
Health, 24.04.2021 02:10
Spanish, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10
Mathematics, 24.04.2021 02:10