To produce 4.00 l of a 250. mm solutions of sodium hydroxide (naoh), how many grams of naoh must be dissolved

Answers

  • Réponse publiée par: stacy05

    Explanation:

    blood is a heterogeneous mixture.

    Because blood and plasma both are separate. Blood and plasma can be separated by centrifugation method which is a phisical change.

  • Réponse publiée par: JUMAIRAHtheOTAKU

    Hello!

    How many moles of phosphoric acid are there in 658 grams of phosphoric acid ?

    We have the following data:

    Molar Mass of phosphoric acid (H3PO4)

    H = 3*(1u) = 3 u

    P = 1*(30.97u) = 30.97 u

    O = 4*(16u) = 64 u

    ------------------------------------

    Molar Mass of phosphoric acid (H3PO4) = 3 + 30.97 + 64

    Molar Mass of phosphoric acid (H3PO4) = 97.97 (≈ 98 g/mol)

    Now, let's make the rule three, grams relative to the mole (g/mol), let's see:

    98 g ---------------- 1 mol  

    658 g -------------  y mol  

    \dfrac{98}{658} = \dfrac{1}{y}

    Product of extremes equals product of means

    98*y = 658*1

    98\:y = 658

    y = \dfrac{658}{98}

    \boxed{\boxed{y \approx 6.714\:mol}}\:\:\:\:\:\:\bf\green{\checkmark}

    ________________________

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

  • Réponse publiée par: 09652393142

    The term refers to a property that depends only on the amount of a substance is extensive property.

    Extensive property of matter depends on the amount of substance present . The other choices do not depends on the amount of substance present.

    Examples on Extensive property are the following:

    Hope it Helps

  • Réponse publiée par: sicienth

    Hello!

    What volume would 14 g of nitrogen gas occupy at STP ?

    data:

    m1 (solute mass) = 14 g

    Molar Mass (MM) of nitrogen gas (N2) = 2*(14u) = 28 g/mol

    Let's find the number of moles, let's see:

    n = \dfrac{m_1\:(g)}{MM\:(g/mol)}

    n = \dfrac{14\:\diagup\!\!\!\!\!g}{28\:\diagup\!\!\!\!\!g/mol}

    \boxed{n = 0.5\:mol}

    It is known that in STP (Standard Temperature and Pressure) one mole of any gas equals 22.4 L, then, what is the volume of the gas?

    1 mol -------------------- 22.4 L

    0.5 mol ---------------- y

    \dfrac{1}{0.5} = \dfrac{22.4}{y}

    multiply the means by the extremes

    1*y = 0.5*22.4

    \boxed{\boxed{y = 11.2\:L}}\Longleftarrow(volume)\end{array}}\qquad\checkmark

    The volume occupied by the gas is 11.2 Liters

    ______________________________________

    I Hope this helps, greetings ... Dexteright02! =)

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To produce 4.00 l of a 250. mm solutions of sodium hydroxide (naoh), how many grams of naoh must be...