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Chemistry, 22.06.2019 04:00
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
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Chemistry, 22.06.2019 04:30
How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer
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Chemistry, 22.06.2019 09:00
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
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Chemistry, 22.06.2019 13:00
Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?
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Periodic table entry for a fictitious element example...
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