Chemistry, 12.12.2020 18:00 mahmudabiazp3ekot
ᴵᵐ ᵃ ᵇᵉᵃᵘᵗⁱᶠᵘˡ ᵃⁿᵈ ⁿᵃᵘᵍʰᵗʸ ᵍⁱʳˡ ʷʰᵒ ʷᵃⁿⁿᵃ ᵇᵉ ʸᵒᵘʳ ˡᵒᵛᵉʳ ᵃⁿᵈ ᶠʳⁱᵉⁿᵈ!! ᴰᵒⁿᵗ ʷᵒʳʳʸ ⁱᵗˢ ᶠᵒʳ ᶠʳᵉᵉ
ᶠⁱⁿᵈ ᵐᵉ ʰᵉʳᵉ
ᵇʳᵃⁱⁿˡʸ.ᵗᵒᵈᵃʸ
Answers: 3
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 12:00
Why are people not able to skip a dive to the deepest part of the ocean
Answers: 1
Chemistry, 22.06.2019 23:00
What does a numerical subscript following an element in a chemical formula mean?
Answers: 1
Chemistry, 23.06.2019 04:31
One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus
Answers: 1
ᴵᵐ ᵃ ᵇᵉᵃᵘᵗⁱᶠᵘˡ ᵃⁿᵈ ⁿᵃᵘᵍʰᵗʸ ᵍⁱʳˡ ʷʰᵒ ʷᵃⁿⁿᵃ ᵇᵉ ʸᵒᵘʳ ˡᵒᵛᵉʳ ᵃⁿᵈ ᶠʳⁱᵉⁿᵈ!! ᴰᵒⁿᵗ ʷᵒʳʳʸ ⁱᵗˢ ᶠᵒʳ ᶠʳᵉᵉ
ᶠⁱⁿᵈ ᵐ...
English, 15.10.2020 06:01
Mathematics, 15.10.2020 06:01
Mathematics, 15.10.2020 06:01
English, 15.10.2020 06:01
Biology, 15.10.2020 06:01
Mathematics, 15.10.2020 06:01
English, 15.10.2020 06:01
Mathematics, 15.10.2020 06:01
History, 15.10.2020 06:01
Advanced Placement (AP), 15.10.2020 06:01
History, 15.10.2020 06:01
World Languages, 15.10.2020 06:01