3 years ago

Which of the following elements in group 1 of the periodic table has the smallest atomic radius?

Chemistry

1 answer:

ivann1987 [24]3 years ago

6 0

The element in group 1 of the periodic table that had the smallest atomic radius is A. Lithium.

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2Al + 6HCl → 2AlCl3 + 3H2 If the chemical reaction produces 129 grams of AlCl3, how many grams of H2 are also produced?

faust18 [17]

So,

Our conceptual plan is as follows:

g AlCl3 --> mol AlCl3 --> mol H2 --> g H2

$\frac{129g\ AlCl_3}{133.4g/mol}\ *\frac{3mol\ H_2}{2mol\ AlCl_3}\ *2.016g/mol \\ \\=2.92 g\ H_2$

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