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morpeh [17]
3 years ago
14

An element with a high ionization energy would most likely be what type of element?

Chemistry
1 answer:
kozerog [31]3 years ago
4 0

Answer:

C

Explanation:

It is most likely non metal with a high electronegativity.

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You plan to separate a polar and a non-polar compound using normal phase column chromatography technique. Methylene chloride (CH
marissa [1.9K]

Answer:

Hexane should be used first.

Explanation:

Chromatography is a method of separating the constituents of a mixture by taking advantage of their different rates of movement in a solvent over an adsorbent medium. Chromatography is a means of separation and analysis that utilises fractional separation. It is based on the principle  that if a fluid containing a number of substances is allowed to pass though an adsorbent medium, the different substances in the fluid may travel at different rates and be separated.

The rate of movement depends on the relative affinities of the constituents for the solvent and adsorbent medium. i.e solutes which are weakly adsorbed by the adsorbent medium are easily redissolved by the ascending solvent and quickly travel up the adsorbent medium. In addition to that , solutes which are very soluble in the solvent move up at a faster rate than those which  are not soluble.

In column Chromatography;

A non-polar solvent should be initiated and applied first. This is because , in a column chromatography, a non-polar compound will be removed at first then later polar compound.

Assuming a polar compound is used first, the polar compounds will be removed alongside with all the non-polar compounds.

From the two Compounds given;

We know that :

Hexane is a non-polar compound and Methylene chloride  is a polar compound. As such, Hexane should be used first.

3 0
3 years ago
Use the de Broglie's Wave Equation to find the wavelength of an electron moving at 7.3 × 106 m/s. Please show your work. Note: h
ad-work [718]

Answer:

\lambda=9.96\times 10^{-11}\ m

Explanation:

The expression for the deBroglie wavelength is:

\lambda=\frac {h}{m\times v}

Where,  

\lambda is the deBroglie wavelength  

h is Planck's constant having value 6.62607\times 10^{-34}\ Js

m is the mass of electron having value 9.11\times 10^{-31}\ kg

v is the speed of electron.

Given that v = 7.3\times 10^6\ m/s

Applying in the equation as:

\lambda=\frac {h}{m\times v}

\lambda=\frac{6.62607\times 10^{-34}}{9.11\times 10^{-31}\times 7.3\times 10^6}\ m

\lambda=\frac{10^{-34}\times \:6.626}{10^{-25}\times \:66.503}\ m

\lambda=\frac{6.626}{10^9\times \:66.503}\ m

\lambda=9.96\times 10^{-11}\ m

6 0
3 years ago
Which compound is an alkyne?<br> (1) C2H2 (3) C4H8<br> (2) C2H4 (4) C4H10
olga2289 [7]
The answer is C2H2 because an alkyne compound consists of a series of unsaturated hydrocarbons with a triple bond. 
5 0
3 years ago
Read 2 more answers
What is the amount of aluminum chloride produced from 40 moles of chlorine and excess aluminum?
Vera_Pavlovna [14]

Answer: Molar mass of Al = 26.98 g/mol

mass of Al = 12 g

mol of Al = (mass)/(molar mass)

= 12/26.98

= 0.4448 mol

According to balanced equation

mol of AlCl3 formed = moles of Al

= 0.4448 mol

Answer: 0.445 mol

hope this help boo❤️❤️❤️

Explanation:

3 0
2 years ago
What is the formula mass of (NH4)2SO4
Jobisdone [24]

Answer:

132.17 amu.

Explanation:

6 0
3 years ago
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