In a reaction, 25 g of reactant AB breaks down into 10g of Product A and an unknown amount of Product B. What is the mass of product B?

Mass of product B  = 15g

Explanation:

Reaction:

          AB →  A   +   B

Mass of AB  = 25g

Mass of A = 10g

Unknown:

Mass of B = ?

Solution:

Based on the law of conservation of matter "matter is neither created nor destroyed but transformed from one form to another in a chemical reaction".

 The amount of product  = amount of reactant

  Mass of AB  = Mass of A + Mass of B

  Now;

    Mass of Product B  = Mass of AB  - Mass of A

     Mass of product B   = 25  - 10  = 15g

Mass of product B  = 15g

a non redox reaction occurs when there is not a transfer of electrons. for redox reactions, which are reduction-oxidation reactions, a change in the oxidation number occurs. elements that are reduced gain electrons, and elements that are oxidized lose electrons.

explanation:

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)