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3 years ago

Why can't all the mixtures be classified as solutions?

1 answer:

5 0

C because A solution is a homogenous mixture at the molecular or ionic level of two or more pure substances that do not react with each other, whose components are in variable proportions.1 2 It can also be defined as a homogeneous mixture formed by a solvent and for one or several solutes. Again :V

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Calculate Î”HÂ° = for the chemical reaction

babymother [125]

Answer: $\Delta H^0$ for the reaction $Cl_2(g)+F_2(g)\rightarrow 2ClF(g)$ is -108kJ

Explanation:

The balanced chemical reaction is,

The expression for enthalpy change is,

$\Delta H=[n\times B.E_{reactants}]-[n\times B.E{products}]$

where, n = number of moles

Now put all the given values in this expression, we get

$\Delta H=[1\times B.E_{Cl_2}+1\times B.E_{F_2}]-[2\times B.E_{ClF}]$

$\Delta H=[(1\times 243)+(1\times 159)]-[2\times 255]$

$\Delta H=-108kJ$

Thus $\Delta H^0$ for the reaction $Cl_2(g)+F_2(g)\rightarrow 2ClF(g)$ is -108kJ

4 0

2 years ago

Is glucose a solution colloid or suspension?

Tju [1.3M]

Glucose is a solution.

5 0

3 years ago

PLEASE HELP ME I NEED HELP

Crazy boy [7]

Answer:

5 moles S x (36.02 g S/mole S) = 180.1 grams of S

Explanation:

The periodic table has mass units for every element that can be correlated with the number of atoms of that element. The relationship is known as Avogadro's Number. This number, 6.02x $10^{23}$ , is nicknamed the mole, which scientists found to be a lot more catchy, and easier to write than 6.02x $10^{23}$ . The mole is correlated to the atomic mass of that element. The atomic mass of sulfur, S, is 36.02 AMU, atomic mass units. But it can also be read as 36.02 grams/mole.

This means that 36.02 grams of S contains 1 mole (6.02x $10^{23}$ ) of S atoms.

This relationship holds for all the elements. Zinc, Zn, has an atomic mass of 65.38 AMU, so it has a "molar mass" of 65.38 grams/mole. ^5.38 grams of Zn contains 1 mole of Zn atoms.

And so on.

5.0 moles of Sulfur would therefore contain:

(5.0 moles S)*(36.02 grams/mole S) = 180.1 grams of S

Note how the units cancel to leaves just grams. The units are extremely helpful in mole calculations to insure the correct mathematical operation is done. To find the number of moles in 70 g of S, for example, we would write:

(70g S)/(36.02 grams S/mole S) = 1.94 moles of S. [Note how the units cancel to leave just moles]

4 0

2 years ago

What is the Answer of the picture

Neko [114]

Answer: d

Explanation: I got it right

8 0

3 years ago

Read 2 more answers

How many moles are 21.67 L of NH4CI?

Gnoma [55]