Name the one at the bottom please
...
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 19:30
What is the common name for the compound shown here? enter the common name of the compound shown?
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:30
How many grams of ammonia would be produced by the decomposition of 16.93 mlof hydrazine? (the density of hydrazine is 1.021g/ml)
Answers: 3
![question](/tpl/images/cats/himiya.png)
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/health.png)
Health, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)
Mathematics, 07.04.2020 23:50
![question](/tpl/images/cats/mat.png)