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Lv 1194 points

Skye Frost

Favorisierte Antworten25%
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  • Concentrations in solutions?

    A 180-mL disinfectant solution contains 85 mL of isopropyl alcohol.

    Determine the % V/V concentration of this solution.

    please if you know the answer help me understand.

    Most descriptive & explanitory answer gets 10.

    3 AntwortenChemistryvor 9 Jahren

  • which flask has more molecules?

    Three 1.0L flasks contain He (g), N2 (g), and H2S (g) at SATP. which statement is true relative to the number of molecules in the flasks.

    A) the flask of He (g) contains the most molecules.

    B) the flask of N2 (g) contains the most molecules.

    C) the flask of H2S (g) contains the most molecules.

    D) All three flasks contain the same number of molecules.

    It's C right?

    Please & Thank you

    4 AntwortenAgriculturevor 9 Jahren

  • what is the formula & answer to this Chem question?

    2L helium tank under 15Mpa at 295K is used to blown up balloons.

    the balloons have V of 2L and maintain a pressure of 115Kpa.

    what is the MAX. # of balloons that can be blown up.

    A) 100

    B) 130

    C) 260

    D) 380

    1 AntwortMathematicsvor 9 Jahren

  • P1=100 V1=200L T2=223K P2=19.5 T1=298K?

    P1=100Kpac V1=200L T2=223K P2=19.5Kpac T1=298K

    P1*V1*T2/T1*P2= V2

    (100 x 200 x223K) / (19.5 x 298K)

    A) 1.35 mL

    B) 29.6 L

    C) 51.2 L

    D) 768 L

    please assist me!

    1 AntwortChemistryvor 9 Jahren