Why is it important to differentiate elements and compounds?


  • Réponse publiée par: lhadyclaire


    because it's needed


    easy as tht

  • Réponse publiée par: aimeedelacruz24


    I have 345 mL of a 1.5 M naCl solution if i boil the water until the volume of the solution is 250 mL what will be the molarity of the solution?

    We have the following data:  

    M1 (molar concentration or initial molarity) = 1.5 M

    V1 (solution volume or initial volume) = 345 mL

    V2 (solution volume or final volume) = 250 mL

    M2 (molar concentration or final molarity) = ? (in M  )

    Using the concentration dilution formula, we have:

    M_1 * V_1 = M_2 * V_2

    1.5*345 = M_2*250

    517.5 = 250\:M_2

    250\:M_2 = 517.5

    M_2 = \dfrac{517.5}{250}

    \boxed{\boxed{M_2 = 2.07\:M}}\:\:\:\:\:\:\bf\purple{\checkmark}


    \bf\red{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

  • Réponse publiée par: sherelyn0013

    It is stated that 1 atm = 760mmHg = 760 torr = 101.325kPa so now we can convert the given pressure to the following units using dimensional analysis.

    A. 99.8kPa to mmHg

    101.325kPa = 760 mmHg

    so 99.8 kPa x (760mmHg / 101.325kPa)


    B. 99.8kPa to torr

    101.325kPa = 760 torr

    99.8kPa x (760torr/ 101.325kPa)


    C. 99.8kPa to atm

    1 atm = 101.325kPa

    99.8kPa x ( 1 atm/ 101.325kPa)

    =0.98 atm

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Why is it important to differentiate elements and compounds?...