Answer:
The mass of glycerol that the student should weigh out depends on the volume that is needed. For example, the density of glycerol is 1.26 g/mL. Then, if 500 mL of glycerol is needed, 630 g should be weighed.
Explanation:
Density is the amount of mass per unit of volume. Density relates how many grams 1 milliliter of a substance weighs. Thus, if the density of glycerol is 1.26 g/mL means that 1.26 grams of glycerol occupy 1 mL of volume, or, in other words, 1 mL of glycerol weighs 1.26 grams.
Therefore, if 500 mL of glycerol is required to use for an experiment, 630 grams need to be weighed:
1 mL glycerol________ 1.26 g
500 mL glycerol______ x= 500mL * 1.26 g / 1 mL = 630 g
Explanation:
The combustion of ethanol is best represented by the equation below:
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O + heat
Combustion process is very common among hydrocarbons.
Ethanol is an alcohol and in the presence of oxygen it will combust.
In combustion heat energy is always released into the environment.
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O + heat
We see that ethanol combines with oxygen to give carbon dioxide and water in the reaction above.
The heat produced signifies that the reaction is exothermic in nature.
learn more:
Combustion brainly.com/question/11200282
#learnwithBrainly
The answer is C.
The vast difference in electronegativity of the oxygen and hydrogen in water, the O-H bond is polar.
C, A, A, B, D. Hope this is correct! Have an awesome day!
