Answer:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.
The correct option is this: WE CAN NOT DETECT IT USING THE CHEMICAL SENSES.
The chemical senses refers to the senses of taste and smell. In order for one to detect a stimuli by chemical sense, such a stimuli must be dissolved in water or the mucous that coats the olfactory epithelium. A stimuli that is not dissolved in water or mucous can not be perceived.
(3.45 x 10^20 molecules of sulfur dioxide ) x
= 5.73x10^-4 mole of sulfur dioxide
Answer: C4H
Explanation:
An hydrocarbon is a compound with carbon and hydrogen atoms only covalently linked together.
Thus, all hydrocarbons have a basic formula of CH.
Now, mass of hydrocarbon = 100%
Mass of hydrogen = 20%
Mass of carbon = (100% - 20%) = 80%
i.e Carbon : Hydrogen
= 80% : 20%
= (80% / 20%)
= 4 : 1
Thus, the empirical formula of the hydrocarbon is C4H