![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 13:30
What is the molecular formula of a hydrocarbon with m+ = 166? (write the formula with no subscripts, e.g. c4h10.) what is the sum of rings and double bonds in this compound?
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 21:00
Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing
Answers: 3
![question](/tpl/images/cats/himiya.png)
![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
You know the right answer?
If 0.00102=102/n, what is the value of n...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.05.2021 01:40
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.05.2021 01:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 25.05.2021 01:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 25.05.2021 01:40
![question](/tpl/images/cats/en.png)
English, 25.05.2021 01:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.05.2021 01:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.05.2021 01:40
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 25.05.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.05.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.05.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.05.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.05.2021 01:40