3 years ago

The noble gases are grouped together in the periodic table. where are the noble gases in the table?

Chemistry

2 answers:

Rasek [7]3 years ago

6 0

For the noble gasses, you get D, but metals are basically everywhere in the periodic table...

patriot [66]3 years ago

3 0

your wrong sorry to say

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Read 2 more answers

The molar mass of NH3 is 17.03 g/mol. The molar mass of H2 is 2.0158 g/mol. In a particular reaction, 0.575 g of NH3 forms. What

vivado [14]

The answer
the general for of the equation of reaction is
N2 + 3 H2 ------------ 2NH3
1mol 3mole 2 mole
nH2 nNH3
(nX means number of mole of X)

according to the law of proportion
3 / nH2 = 2 / nNH3 (E)

nNH3 = m NH3 / 17.03 , and m NH3 = <span>0.575 g
consequently </span>nNH3 = 0.575 g / 17.03 = 0.03 mol

by considering (E) 3 / nH2 = 2 / 0.03 = 66.66, and nH2 = 3 / 66.66 =0.045

finally we can write

mH2 = nH2 x 2.0158 =0.045 x 2.0158 = 0.09 g

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3 years ago