Cov txheej txheem:

Vim li cas peb thiaj siv cov lej tseem ceeb hauv chemistry?
Vim li cas peb thiaj siv cov lej tseem ceeb hauv chemistry?

Video: Vim li cas peb thiaj siv cov lej tseem ceeb hauv chemistry?

Video: Vim li cas peb thiaj siv cov lej tseem ceeb hauv chemistry?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov duab tseem ceeb (tseem hu ua tus lej tseem ceeb ) yog ib feem tseem ceeb ntawm kev xam zauv scientific thiab lej, thiab hais txog qhov tseeb thiab qhov tseeb ntawm tus lej . Nws yog ib qho tseem ceeb uas yuav tau kwv yees qhov tsis paub tseeb ntawm qhov kawg tshwm sim, thiab qhov no yog qhov twg cov duab tseem ceeb ua qhov tseem ceeb heev.

Kuj paub, dab tsi yog figs thiab yog vim li cas lawv tseem ceeb?

Cov duab tseem ceeb yog tseem ceeb vim lawv cia peb mus taug qab qhov zoo ntawm kev ntsuas. Qhov tseem ceeb, sib fig ua qauv qhia ntau npaum li cas rau puag ncig, thaum tseem ua kom paub tseeb tias cov lus teb tsis meej dua li peb cov nqi pib.

Ib yam li ntawd, pes tsawg tus lej tseem ceeb koj siv hauv chemistry? Tus lej 0 muaj ib qho tseem ceeb daim duab. Yog li ntawd, ib qho xoom tom qab tus lej lej yog kuj tseem ceeb . Piv txwv li: 0.00 muaj peb cov duab tseem ceeb . Txhua tus lej nyob rau hauv scientific notation yog xav txog tseem ceeb.

Xav txog qhov no, cov ntaub ntawv tseem ceeb siv nyob qhov twg?

Basic tswvyim ntawm cov duab tseem ceeb feem ntau yog siv nyob rau hauv kev twb kev txuas nrog rounding. Rounding rau cov duab tseem ceeb yog ib txoj kev siv dav dav tshaj qhov sib npaug rau n qhov chaw zauv, txij li nws ua haujlwm tus lej ntawm txawv nplai nyob rau hauv ib tug uniform txoj kev.

Thaum twg yuav tsum tau siv cov nuj nqis tseem ceeb?

Hauv kev tshawb fawb, tsuas yog cov lej uas muaj qhov tseem ceeb (los ntawm kev ntsuas) yog sau

  • Txoj Cai 1: Cov lej uas tsis yog xoom yog ib txwm tseem ceeb.
  • Txoj Cai 2: Ib qho xoom ntawm ob tus lej tseem ceeb yog qhov tseem ceeb.
  • Txoj Cai 3: Qhov kawg xoom lossis qhov kawg xoom hauv qhov thib kaum tsuas yog qhov tseem ceeb.

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