How does the scientific process generally begin

Chemistry

1 answer:

e-lub [12.9K]3 years ago

7 0

It begins by trying to solve a problem and or making a hypothesis.

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9. Which one of the following is not a potential effect of global warming?

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D. Increase in UV radiation

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Which statement describes a chemical property that many elements might share?

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14. Which of the following is produced when propane (C3H8) is combusted completely? (2 points)

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The following is produced when propane (C₃H₈) is combusted completely : H₂O

<h3>Further explanation </h3>

Complete combustion of Hydrocarbons with Oxygen will be obtained by CO₂ and H₂O compounds.

If O₂ is insufficient there will be incomplete combustion produced by CO and H and O

Hydrocarbon combustion reactions (especially alkanes) $\large {\boxed {\bold {C_nH _ (_2_n _ + _ 2_) + \frac {3n + 1} {2} O_2 \Rightarrow nCO_2 + (n + 1) H_2O}}}$

For combustion of propane C₃H₈ (n = 3) ⇒ completely(excess O₂) :

C₃H₈+5O₂⇒3CO₂+4H₂O

The products of combustion : CO₂ and H₂O

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