Please answer it fast I have a exam
...
![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 01:00
Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00
Why is permeable soil best for plants that need a lot of drainage?
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 17:30
Air can be considered a mixture. which statement does not explain why?
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.02.2021 01:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/biologiya.png)
Biology, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.02.2021 01:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/mkx.png)
Arts, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00
![question](/tpl/images/cats/fizika.png)
Physics, 23.02.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 23.02.2021 01:00