![subject](/tpl/images/cats/himiya.png)
Chemistry, 18.02.2020 00:02 buky0910p6db44
Which pairs of ions produce similar colors in the flame tests? 4. Explain how the colors observed in the flame tests are produced. 5. Define these terms: A. quanta B. ground state C. excited state
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:40
Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.
Answers: 3
![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 16:10
Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 17:10
In which block of the periodic table is uranium (u) found? s blockd blockp blockf block
Answers: 1
You know the right answer?
Which pairs of ions produce similar colors in the flame tests? 4. Explain how the colors observed in...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.10.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 04.10.2020 14:01
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mkx.png)
Arts, 04.10.2020 14:01
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 04.10.2020 14:01
![question](/tpl/images/cats/mir.png)
World Languages, 04.10.2020 14:01
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.10.2020 14:01
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.10.2020 14:01
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 04.10.2020 14:01
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 04.10.2020 14:01
![question](/tpl/images/cats/en.png)
English, 04.10.2020 14:01
![question](/tpl/images/cats/istoriya.png)
History, 04.10.2020 14:01