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Morgarella [4.7K]
3 years ago
12

In the periodic table, what is the relationship between two elements that are placed side-by-side in a row?

Chemistry
1 answer:
Yakvenalex [24]3 years ago
7 0
1) they both lie in same Period
2) element on right side has 1 more valence electron than element on left side
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I believe pH = -log[H+]

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Complete combustion of 2.60 g of a hydrocarbon produced 8.46 g of co2 and 2.60 g of h2o. what is the empirical formula for the h
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1 mole of carbon dioxide contains a mass of 44 g, out of which 12 g are carbon. 
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We first calculate the number of moles of each,
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Then, we calculate the ratio of Carbon to hydrogen by dividing with the smallest number value;
             Carbon : Hydrogen
  0.1923/0.1923 : 0.2889/0.1923
                       1 :  1.5
                      (1 : 1.5) 2
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Hence, the empirical formula of the hydrocarbon is C2H3
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