This is how krypton appears in the periodic table Rounded to the nearest whole number, how many protons
are in an atom of krypton?
36
36
Kr
48
84
120
Krypton
83.80
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PA Science 78 - Ed
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How many moles are in 123.0 grams of kclo4?

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt