The following is an example of which type of reaction? ch3oh + o2 → co2 + 2h2o + heat question 5 options: combustion endothermic spontaneous substitution save

Option (A) is the correct answer.

Explanation:

When a compound or substance reacts in the presence of oxygen and results in the formation of carbon dioxide and water along with the release of heat are known as combustion reaction.

For example, is a combustion reaction.

Heat is released in a combustion reaction because these are exothermic in nature.

Therefore, we can conclude that the following is an example of combustion type of reaction.

                 CH3OH + O2 → CO2 + 2H2O + heat

idk

explanation:

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.