Question

plz answer both fast plz not free point only perfect answers needed plz humble request​

Answer 1

Answer:

138g/mol actually for 5 th question

Answer 2

Answer:

2. difference between kinetic and potential energy:

kinetic energy: the kinetic energy of an object is the energy that it possesses due to its motion.

potential energy: potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

1. molecular mass of K2CO3 : {( 2×39)12+(3×16) } = (78+12+48)u = 138u

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