Answer:
HERE IS UR ANSWER...
The data which is accurate means it can't be changed further is called accurate data.while,
The data which is changed again and again is called reproducible data.
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124.322796 grams
Explanation:
I think this may help
Sum of subscripts on left = 92. Sum of subscripts on right = 57. So X must have atomic number = 92 – 57 = 35. Element 35 is bromine.
option A is correct
moles Ar in 20g = 0.500 mole Ar
moles = grams given / formula weight = 20g / 39.948g·mol⁻¹ = 0.500 mole Ar
