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rosijanka [135]
3 years ago
8

HURRY PLS HELP

Chemistry
1 answer:
ratelena [41]3 years ago
8 0

<em>Scientists believe water currents within the earth's mantle are slowly causing the plates above to move </em>

<em></em>

<em>Answer: </em><u><em>True</em></u>

<u><em /></u>

<u><em>EXplanation:</em></u>

<u><em /></u>

<u><em>The common, simplified explanation for why tectonic plates are moving is that they're carried along on currents in the upper mantle, the slowly flowing layer of rock just below the Earth's crust. Converging currents drive plates into each other. Diverging currents pull them apart</em></u>

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Which of the following factors does not affect a reaction rate?
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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. 
Hence, in this case the mass of carbon in 8.46 g of CO2:
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Therefore, 2.6 g of water contains;
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Therefore, with the amount of carbon and hydrogen from the hydrocarbon we can calculate the empirical formula.
We first calculate the number of moles of each,
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Hydrogen = 0.2889/1 = 0.2889 moles
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
                     = 2 : 3
Hence, the empirical formula of the hydrocarbon is C2H3
5 0
4 years ago
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