Chemistry, 06.10.2019 18:00, mileto5824
The continents of africa and south america used to "fit together" like puzzle pieces. about how far back in time would you have to go to find africa and south america connected together?
*600 million years
*430 million years
*150 million years
*90 million years
Answers: 1
Chemistry, 22.06.2019 08:30, MacenParisi
In the reaction between a crushed antacid tablet and vinegar what gas is emitted
Answers: 2
Chemistry, 22.06.2019 13:00, nadikadiaz1
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, 23.06.2019 00:00, savyblue1724707
How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?
Answers: 3
The continents of africa and south america used to "fit together" like puzzle pieces. about how far...
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