Which of the following is not a correct ionic formula unit?
bao
ca3n2
kcl
l...
Chemistry, 17.12.2019 06:31 sullivanjakob
Which of the following is not a correct ionic formula unit?
bao
ca3n2
kcl
lis2
question 3(multiple choice worth 2 points)
when nitrogen and aluminum form an ionic bond, what is the formula?
n2al3
nal
al2n3
aln
question 4 (essay worth 3 points)
what is the formula of a compound formed between iodine (i) and aluminum (al)?
question 5(multiple choice worth 2 points)
what is the charge of an oxide ion?
2+
3+
2-
3-
question 6(multiple choice worth 2 points)
which of the following is a possible formula unit?
li3b
clo2
licl
pbn
question 7(multiple choice worth 2 points)
what subscripts are needed to complete the formula unit li_n_?
1,1
3,1
1,3
3,3
question 8 (essay worth 3 points)
what is the resulting formula unit when magnesium (mg) and nitrogen (n) bond?
question 9(multiple choice worth 2 points)
what element gains three electrons to fill its valence energy level?
s
n
al
c
number 4 and 8 are essays
Answers: 1
Chemistry, 22.06.2019 09:40
In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need
Answers: 2
Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59
Mathematics, 04.05.2020 22:59