Consider a hypothetical reaction in which a and b are reactants and c and d are products. if 25 grams of a completely reacts with 26 grams of b to produce 14 grams of c, how many grams of d will be produced?

According to law of conservation of mass, the mass can neither be destroyed nor created in a chemical reaction.  The mass of reactants and mass of products are equal in a chemical reaction.

The reaction between A and B (reactants) to form C and D (products) is given as:

The mass of A = (given)

The mass of B = (given)

The mass of reactant = mass of A + mass of B

Substituting the values:

The mass of reactant =

The mass of C =

Let the mass of D =

So, the mass of product = mass of C  + mass of D

Substituting the values:

the mass of product =

According to law of conservation of mass:

the mass of reactant = the mass of product

Substituting the values,

Hence, the amount of D produced in the reaction is .

a galvanic cell( aka voltaic cell) and electrolytic cell

explanation:

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it's c. elements are placed in rows based on how may valencies electrons have.