Video: Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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:
- Siv atomic masses los ntawm lub sij hawm lub sij hawm los xam cov molar mass ntawm aspartame.
- 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
Pom zoo:
Muaj pes tsawg molecules nyob rau hauv 9 moles ntawm h2s?
9 moles ntawm H2S = 9 (6.022 * 10²³ molecules) = 5.4198 * 1024 molecules. Teb: muaj 5.4198 * 1024 molecules hauv 9.00 moles ntawm H2S
Muaj pes tsawg moles ntawm oxygen atoms nyob rau hauv ib mole ntawm Al2O3?
(c) 1 molecule ntawm Al2O3 muaj 3 atoms ntawm oxygen. Yog li, 1 mole ntawm Al2O3 muaj
Muaj pes tsawg grams nyob rau hauv ib mole ntawm HG?
1 mole yog sib npaug rau 1 moles Hg, los yog 200.59 grams
Muaj pes tsawg grams ntawm o2 nyob rau hauv 1.2 moles ntawm o2?
Koj tuaj yeem saib cov ntsiab lus ntxiv ntawm txhua chav ntsuas: molecular hnyav ntawm O2 lossis grams Lub hauv paus SI rau tus nqi ntawm cov khoom yog mole. 1 mole yog sib npaug rau 1 moles O2, los yog 31.9988grams. Nco ntsoov tias kev sib hloov yuam kev tuaj yeem tshwm sim, yog li nco ntsoov xyuas qhov ntawd
Muaj pes tsawg grams ntawm sodium hydroxide nyob rau hauv ib 2m tov?
Lub sij hawm 2M NaOH yog cov ntawv luv rau 2 molarsodium hydroxide tov. Qhov kev qhia no txhais tau hais tias 2moles (los yog 2 x 40 g = 80 g) ntawm NaOH yog yaj dej tsis txaus los ua ib liter ntawm kev daws