Answers: 3
Chemistry, 22.06.2019 08:30
What are the first three quantum numbers for the electrons located in subshell 2s?
Answers: 2
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
Chemistry, 22.06.2019 12:30
Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)
Answers: 1
- Explain why there are different types of atoms.
- Describe the difference(s) between an atom and...
Mathematics, 09.12.2020 20:30
English, 09.12.2020 20:30
Arts, 09.12.2020 20:30
Mathematics, 09.12.2020 20:30
World Languages, 09.12.2020 20:30
English, 09.12.2020 20:30
Arts, 09.12.2020 20:30
Spanish, 09.12.2020 20:30