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Lab Practicum: Chem120/ Chem 120 (Latest 2025/ 2026 Update) Introduction to General, Organic & Biological Chemistry | Qs & As| Grade A| 100% Correct (verified Answers)- Chamberlain

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Lab Practicum: Chem120/ Chem 120 (Latest 2025/ 2026 Update) Introduction to General, Organic & Biological Chemistry | Qs & As| Grade A| 100% Correct (verified Answers)- Chamberlain Q: you have a chuck of radioactive iron. This isotope has a half-life of about 2.5 years. How many grams of a 140 g sample of this radioactive iron will remain intact after five years? Answer: 35g Q: Ca(OH)2 reacts with HBr in a neutralization reaction. What products would form from this reaction. select all that apply. Answer: CaBr2 H2O Q: an isotope of nitrogen has a mass number of 15. This isotope must have ____ protons and ____ neutrons. Answer: 7 protons 8 neutrons Q: Ethanol contains what functional group? Answer: alcohol Q: determine which of the molecules below you would expect to dissociate into ions in water. Drag each molecule you believe will dissociate into the dissociates in water box. Don't guess! There are penalties for incorrect selections. Answer: NaCl FeCl2 CaSO4 Q: you have 35 mL of a 20.0% saline solution. How many milliliters of a 0.9% saline solution can you make? Answer: 778 mL Q: You measure the pH of a series of solutions using a pH meter to determine which are acidic drag each acidic solution to the acidic solution box. Don't guess! There are penalties for incorrect selections. Answer: 3.7 0.7 Q: What theory could you produce based off of these results? Answer: everything EXCEPT compounds with HIGHER molecular weights have a faster rate than compounds with lower rates Q: determine which of the following subatomic particles provide in the nucleus of an atom. Drag each of the subatomic particles that appear in the nucleus to the subatomic particle box. Don't guess! There are penalties for incorrect selections. Answer: protons neutrons Q: what is the name of the substance P2Cl6?

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Uploaded on
January 4, 2025
Number of pages
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Written in
2024/2025
Type
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Questions & answers

Subjects

  • chem 120 chem120 chem 120
  • lab practicum chem120 chem 120 latest 2025 202
  • what is the name of the substance p2cl6
  • you have a chuck of radioactive iron this isotop
  • chem 120chem120chem 120 chem120 final

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LablPracticum:lChem120/lCheml120l(Latest
l2025/l2026lUpdate)lIntroductionltolGeneral,
lOrganicl&lBiologicallChemistryl|lQsl&lAs|l
GradelA|l100%lCorrectl(verifiedlAnswers)-
lChamberlain

Q:lyoulhavelalchuckloflradioactiveliron.lThislisotopelhaslalhalf-
lifeloflaboutl2.5lyears.lHowlmanylgramsloflal140lglsampleloflthislradioactiveliro
nlwilllremainlintactlafterlfivelyears?


Answer:
35g




Q:lCa(OH)2lreactslwithlHBrlinlalneutralizationlreaction.lWhatlproductslwouldlfo
rmlfromlthislreaction.lselectlalllthatlapply.


Answer:
CaBr2l
H2O




Q:lanlisotopeloflnitrogenlhaslalmasslnumberlofl15.lThislisotopelmustlhavel____l
protonslandl____lneutrons.

,Answer:
7lprotons
8lneutrons




Q:lEthanollcontainslwhatlfunctionallgroup?


Answer:
alcohol




Q:ldeterminelwhichloflthelmoleculeslbelowlyoulwouldlexpectltoldissociatelintoli
onslinlwater.lDragleachlmoleculelyoulbelievelwillldissociatelintoltheldissociatesli
nlwaterlbox.lDon'tlguess!lTherelarelpenaltieslforlincorrectlselections.


Answer:
NaCl
FeCl2
CaSO4




Q:lyoulhavel35lmLloflal20.0%lsalinelsolution.lHowlmanylmillilitersloflal0.9%ls
alinelsolutionlcanlyoulmake?


Answer:
778lmL

, Q:lYoulmeasurelthelpHloflalseriesloflsolutionslusinglalpHlmeterltoldeterminelwh
ichlarelacidicldragleachlacidiclsolutionltolthelacidiclsolutionlbox.lDon'tlguess!lTh
erelarelpenaltieslforlincorrectlselections.


Answer:
3.7
0.7




Q:lWhatltheorylcouldlyoulproducelbasedlofflofltheselresults?


Answer:
everythinglEXCEPTlcompoundslwithlHIGHERlmolecularlweightslhavelalfasterlr
atelthanlcompoundslwithllowerlrates




Q:ldeterminelwhichloflthelfollowinglsubatomiclparticleslprovidelinlthelnucleuslo
flanlatom.lDragleachloflthelsubatomiclparticleslthatlappearlinlthelnucleusltolthels
ubatomiclparticlelbox.lDon'tlguess!lTherelarelpenaltieslforlincorrectlselections.


Answer:
protons
neutrons




Q:lwhatlislthelnameloflthelsubstancelP2Cl6?
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