Which of the following is a combustion reaction?

B. C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Explanation:

A combustion reaction can be defined as a class of chemical reactions, that named as "burning", that occurs usually when a hydrocarbon reacts with oxygen to produce carbon dioxide (CO₂) and water (H₂O).So, the correct answer is the choice B, 1.0 mole of propane "hydrocarbon" burned with 5.0 moles of oxygen to produce 3.0 moles of CO₂ and 4.0 moles of H₂O.

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid