![subject](/tpl/images/cats/himiya.png)
Given the balanced reaction: 4A1 + 302 > 2A1203
A student started with 3.0 grams of aluminum and excess oxygen. If she
produced 4.6 grams of aluminum oxide, Al2O3, what was her percent
yield?
Molar mass of Al2O3 is 102 grams.
% yield = (actual/theoretical)*100
A. 41 %
B. 81 %
C. 122 %
D. 93 %
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/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 13:00
16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.
Answers: 2
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:30
How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 06:30
Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas
Answers: 2
You know the right answer?
Given the balanced reaction: 4A1 + 302 > 2A1203
A student started with 3.0 grams of aluminum and...
Questions
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 01.07.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
Physics, 01.07.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.07.2020 15:01
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 01.07.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)