![subject](/tpl/images/cats/himiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 16:30
Where are each of the three particles located within the atom?
Answers: 1
![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 15:30
Light waves can move through , but they travel fastest when they move through a(n) .
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30
Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2
Answers: 1
You know the right answer?
express each answer to the correct number of significant figures. (1.20×10^4)×(2.152×10^2)=?×10^6 si...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/himiya.png)
Chemistry, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 08.01.2021 19:20
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/health.png)
Health, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/en.png)
English, 08.01.2021 19:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 19:20
![question](/tpl/images/cats/geografiya.png)
Geography, 08.01.2021 19:20
![question](/tpl/images/cats/pravo.png)
Law, 08.01.2021 19:20