Chemistry, 28.06.2019 14:20 719563mercy
Which statement best describes the electrons in this illustration? 1. the electrons are positively charged particles located outside the nucleus 2. the electrons are positively charged particles located inside the nucleus 3. the electrons are negatively charged particles located outside the nucleus 4. the electrons are negatively charged particles located inside the nucleus
Answers: 3
Chemistry, 21.06.2019 17:00
What is important to study for nios grade 12 chemistry? i have only one month left.
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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 02:00
Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon
Answers: 1
Which statement best describes the electrons in this illustration? 1. the electrons are positively...
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