What do the symbols in parenthesis indicate?
c7h16 (l) + 11o2 (g) 7co2 (g) + 8h2o (l)
a the physical state of each reactant and product
b the catalyst used in the reaction
c the number of atoms of each reactant and product
d the unit of reactant and product
e the rate of the chemical reaction

a the physical state of each reactant and product

Explanation:

This is an example of combustion in which hydrocarbon is reacted with oxygen to produce carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

Thus chemical equations are balanced and the physical state of each reactant and product is specified in the balanced chemical equation.

the answer is the first option

explanation:

just googled it m8. not that hard

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the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.