What is defined as the energy required to start a chemical reaction?
heat
reactant ene...
Chemistry, 04.05.2021 04:10 mandilynn22
What is defined as the energy required to start a chemical reaction?
heat
reactant energy
activation energy
precipitate energy
Answers: 1
Chemistry, 22.06.2019 18:00
Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 3
Chemistry, 23.06.2019 16:50
Question 2 (5 points) which of the following materials is useful for making molds because it has a low melting point? question 2 options: wood metal wax sand
Answers: 2
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