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Vera_Pavlovna [14]
3 years ago
14

The periodic table and how to use?

Chemistry
1 answer:
jeka57 [31]3 years ago
4 0
So let’s say someone asks you what what element has an atomic mass of 190.23 in period 6 so it would be Osmium and the metals are Alkali Alkaline Earth Other metals transition metals inner transition metals lanthanoids actinides rare earth elements metalloids semimetals nonmetals halogens noble gases newly recognized elements those are how the elements are sorted the atomic number is how high or low something is like 43 61 84 through 118 is radioactive and atomic symbols like Pb stands for lead or Cr stands for Chromium so you should know how to use some parts of the periodic table this is all I know if you already knew this then I’m sorry

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horrorfan [7]
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3 years ago
Show your calculation by uploading a picture. Calculate the molar mass of ammonia, NH3
Cloud [144]

Answer:

17.04 g/mol

Explanation:

Molar Mass of NH₃

we know that

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And Hydrogen has 1.01 gram/mol

but we have 3 Hydrogens So we multiply

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Now, add

14.01

+<u> </u><u>3</u><u>.</u><u>0</u><u>3</u>

17.04

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17.04 g/mol

<u>-TheUnknown</u><u>Scientist</u>

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mariarad [96]
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What is the answer to this question
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