At STP, all elements in group 17 would be gas except for iodine.
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Answer:
The volume will be 0.47 L
Answer:
has molar mass of 142 g.
Explanation:
Firstly we will find out the atomic weight of the elements of the compound.
Mg = 24 P = 31 Al = 27 Cl = 35 Ba = 137 O = 16
Now 1st compound is , in this compound there is 1 atom of Magnesium and 2 atom of Chlorine.
So atomic weight of =
2nd compound is , in this compound there is 2 atom of Phosphorus and 5 atom of Oxygen.
So atomic weight of =.
3rd compound is , in this compound there is 1 atom of Barium and 2 atom of Chlorine.
So atomic weight of =
4th compound is , in this compound there is 1 atom of Aluminium and 3 atom of Chlorine.
So atomic weight of =
Hence the substance having molar mass of 142 g is .
The results of this experiment gave Rutherford the means to arrive at two conclusions: one<span>, an atom was much more than just empty space and scattered electrons and </span>two<span>, an atom must have a positively charged center that contains most of its mass (which Rutherford termed as the </span>nucleus<span>).
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