Hydrogen is the first element on
the periodic table. How many
protons does it have?
A....
Chemistry, 03.03.2021 23:40 livichavezp2kcd3
Hydrogen is the first element on
the periodic table. How many
protons does it have?
A. one
B. 118
C. it varies
Answers: 2
Chemistry, 22.06.2019 02:00
In which of these cases are the two wave points considered to be in phase with each other?
Answers: 1
Chemistry, 22.06.2019 06:10
Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.
Answers: 1
Chemistry, 22.06.2019 10:00
Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption
Answers: 2
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
Mathematics, 12.03.2020 18:59
History, 12.03.2020 18:59
Mathematics, 12.03.2020 18:59
Mathematics, 12.03.2020 18:59
Biology, 12.03.2020 18:59
Mathematics, 12.03.2020 19:00
Social Studies, 12.03.2020 19:00
Biology, 12.03.2020 19:00