Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?
Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?

Video: Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?

Video: Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?
Video: Kev Hlub Ntawm Kuv Niam : Koob Tsheej Xyooj 2024, Kaum ib hlis
Anonim

Cov mis mos molecular rau aspartame yog C14H18N2O5, thiab nws cov molar loj yog hais txog 294 g / mol . 1.2 g yoj / 294 g / mol 4.08 X 10-3 moles aspartame . Txij li txhua tus mole ntawm aspartame muaj 2 moles ntawm nitrogen , koj muaj 8.16 X 10-3 moles ntawm koj N 1.2 grams ntawm aspartame.

Ntxiv mus, pes tsawg moles nyob rau hauv 5 mg ntawm aspartame?

Mass ntawm aspartame = 5mg ib = 0.005 g. Tsis tas li ntawd, molar loj ntawm aspartame Yog ' = 294,3 g. Tam sim no, moles ntawm aspartame = {eq}frac{mass}{molar Mass of aspartame = 5mg ib = 0.005 g.

Ib sab saum toj no, nws muaj pes tsawg atoms ntawm hydrogen? Cov tshuaj formula rau dej yog H2O uas txhais tau tias txhua molecule ntawm dej muaj 2 atom ua ntawm hydrogen (H) thiab ib atom ntawm oxygen (O). Ntawm no los txog qhov tseem ceeb. Los ntawm Lub Sij Hawm Lub Sij Hawm, ib tus pom tias ib lub mole ntawm hydrogen atoms hnyav 1 gram thaum ib mole ntawm oxygen atoms hnyav 16 grams.

Ib sab saum toj no, koj yuav pom cov molar loj ntawm aspartame li cas?

Aspartame yog cov khoom qab zib uas muag li NutraSweet thiab Sib npaug. Nws molecular qauv yog C14H18N2O5.

Tswv yim:

  1. Siv atomic masses los ntawm lub sij hawm lub sij hawm los xam cov molar mass ntawm aspartame.
  2. Faib qhov loj ntawm txhua yam los ntawm molar pawg ntawm aspartame; ces muab faib los ntawm 100 kom tau txais feem pua.

Dab tsi yog qhov molar mass ntawm aspartame?

294.3 g / mol

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