3 years ago

How to memorize the first twenty elements of the periodic table with their numbers

Chemistry

1 answer:

levacccp [35]3 years ago

3 0

You could listen to songs about the Periodic Table, or you could make and study Flash Cards. :)

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Elements in a group have the same number of valence electrons and the same ____

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3 years ago

The reaction of 5.40 g of carbon with excess O2 yields 13.6 g of CO2. What is the percent yield of this reaction?

vazorg [7]

C + O2= CO2
$n = \frac{m}{mw}$
$n = \frac{5.4}{12} \\ n = 0.45 \: mol \: of \: carbon$
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Which is a difference between global and local winds?

valentina_108 [34]

Explanation:

local winds are considered breezes while global winds produce mostly storms

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