0.45g sample of mineral ore is analyzed for chromium and found to contain
0.560mg Cr
2
O...
![subject](/tpl/images/cats/himiya.png)
Chemistry, 18.04.2021 23:50 Animallover100
0.45g sample of mineral ore is analyzed for chromium and found to contain
0.560mg Cr
2
O
3
. Express the concentration of Cr
2
O
3
in the sample as:
(a) Percent (%)
(b) Parts per thousand (ppt)
(c) Parts per million (ppm)
(d) Parts per billion (ppb)
โ
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:50
Answer the questions about this reaction: nai(aq) + cl2(g) โ nacl(aq) + i2(g) write the oxidation and reduction half-reactions: oxidation half-reaction: reduction half-reaction: based on the table of relative strengths of oxidizing and reducing agents (b-18), would these reactants form these products? write the balanced equation: answer options: a. 0/na -> +1/na+1e- b. nai(aq) + cl2(g) โ nacl(aq) + i2(g) c. +1/na+1e- -> 0 /na d. -1/2i -> 0/i2+2e- e. no f. 4nai(aq) + cl2(g) โ 4nacl(aq) + i2(g) g. 2nai(aq) + cl2(g) โ 2nacl(aq) + i2(g) h. 4nai(aq) + 2cl2(g) โ 4nacl(aq) + 2i2(g) i. nai(aq) + cl2(g) โ nacl(aq) + i2(g) j. 0/cl2+2e -> -1/2cl- k. yes
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30
What if it is did darwin used to support his theory of evolution
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:30
If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 04:31
2ki + pb(no3)2 โ 2kno3 + pbi2 determine how many moles of kno3 are created if 0.03 moles of ki are completely consumed.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 17.01.2020 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 17.01.2020 03:31
![question](/tpl/images/cats/istoriya.png)
History, 17.01.2020 03:31
![question](/tpl/images/cats/himiya.png)
Chemistry, 17.01.2020 03:31
![question](/tpl/images/cats/biologiya.png)
Biology, 17.01.2020 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 17.01.2020 03:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
English, 17.01.2020 03:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 17.01.2020 03:31
![question](/tpl/images/cats/biologiya.png)
Biology, 17.01.2020 03:31
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 17.01.2020 03:31
![question](/tpl/images/cats/mat.png)
Mathematics, 17.01.2020 03:31