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3 years ago

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What factor that does not relate to chemical structure promotes the formation of solutions?

1 answer:

Vladimir79 [104]3 years ago

4 0

<span>Major factor which is not a part of the chemical structure that promotes the formation of solutions is the inter molecular forces between them. Also the entropy that is created in the dissolving solvent also considerably effects the solution formation</span>

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If an atom has an atomic mass of 16 and it has 8 neutrons what is it's atomic number

Lana71 [14]

The atomic number is 8.

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3 years ago

An element, X, can form a chloride (XCl3) and an iodide (XI3). The chloride can be converted quantitatively into the iodide when

Arlecino [84]

Answer : The chemical symbol for this element is, (La)

Explanation : Given,

Mass of $XCl_3$ = 0.760 g

Mass of $XI_3$ = 1.610 g

The given chemical reaction is:

$2XCl_3+3I_2\rightarrow 2XI_3+3Cl_2$

First we have to calculate the moles of $XCl_3$ and $XI_3$ .

$\text{Moles of }XCl_3=\frac{\text{Mass of }XCl_3}{\text{Molar mass of }XCl_3}$

Molar mass of Cl = 35.5 g/mole

Let the molar mass of element 'X' be, M

$\text{Moles of }XCl_3=\frac{0.760}{[M+3(35.5)]}$

and,

$\text{Moles of }XI_3=\frac{\text{Mass of }XI_3}{\text{Molar mass of }XI_3}$

Molar mass of I = 126.9 g/mole

Let the molar mass of element 'X' be, M

$\text{Moles of }XI_3=\frac{1.610}{[M+3(126.9)]}$

From the balanced chemical reaction we conclude that,

The moles of ratio of $XCl_3$ and $XI_3$ is, 1 : 1

That means,

$\frac{0.760}{[M+3(35.5)]}=\frac{1.610}{[M+3(126.9)]}$

$\frac{0.760}{[M+106.5]}=\frac{1.610}{[M+380.7]}$

$M=138.667g/mol$

From this we conclude that the element (X) is lanthanum (La) that has molecular weight, 138.667 g/mol.

Hence, the chemical symbol for this element is, (La)

6 0

4 years ago

What is the percent by mass of carbon in acetone c3h6o

Volgvan

Well, the molar mass of acetone would be

3(12.011)+6(1.008)+15.999 , which cleans up to be 58.08 grams.

out of this total, 3(12.011), or 36.033 grams are carbon

So, to find the percent, you do part over whole

36.033/58.08, which equals 0.6204 with significant figures

multiply that by 100 to get 62.04%

Hope that helps!

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3 years ago

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What would happen if the number of protons were greater than the number of electrons in an atom?

Damm [24]

The atom would have an overall 1+ charge.

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3 years ago

The scientific method _____.

Brrunno [24]

the answer is A.) because the scientific method is used to answer problems.

This is the steps,

STEP 1: ask a question

STEP 2: state your hypothesis

STEP 3: conduct an experiment

STEP 4: analyze your results

STEP 5: make a conclusion

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3 years ago

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