Jessica is doing her pre-lab homework for Chemistry. She is asked to predict how many grams of oxygen gas are produced if 40.0 g of potassium chlorate is decomposed according to this balanced chemical equation shown.
2KCIO3(s) - 2KCI(s)+302(g)
She performs the following calculation, and gets 15.7 g of O, as her answer.
EKCIO, ,
mol KCIO,
molo
80
1 mol Kclo 3 mol O2
32.00 g 02
122.55 g KCIO, 2 mol KCIO, 1 mol O2
The next day when her group performs the experiment they obtain an actual yield of 15.1 grams of oxygen gas. What is the percent yield for the experiment?
report your answer to the tenths place, i. e.one decimal place.

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet