Which of these is an example of a physical change?
O a banana ripening in the air
hydrogen bu...
Chemistry, 25.11.2020 14:00 wrightlilybug07
Which of these is an example of a physical change?
O a banana ripening in the air
hydrogen burning in the air
zinc reacting with an acid
O liquid water turning into vapor
Answers: 3
Chemistry, 21.06.2019 19:30
Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)
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 23:30
The ammonia molecule in the diagram has the observed bond orientation because
Answers: 1
Chemistry, 23.06.2019 01:30
List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn
Answers: 2
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