2.00 mol C12H22O11 x (6.02 x 10^23 molecule C12H22O11 / 1 mol C12H22O11) = 1.20 x 10^24 molecules C12H22O11
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Answer:
<h3>CH3OH (Methanol)</h3>
MM = 12 + 8 + 16 = 36u
Answer:
1.70
Explanation:
The molar mass of perchloric acid is 100.46 g/mol. The moles corresponding to 484 mg (0.484 g) are:
0.484 g × (1 mol/100.46 g) = 4.82 × 10⁻³ mol
4.82 × 10⁻³ moles are dissolved in 240 mL (0.240 L) of solution. The molar concentration of perchloric acid is:
4.82 × 10⁻³ mol/0.240 L = 0.0201 M
Perchloric acid is a strong monoprotic acid, that is, it dissociates completely, so [H⁺] = 0.0201 M.
The pH is:
pH = -log [H⁺] = -log 0.0201 = 1.70
Answer:
Silica gel chromatography is a s good method for separating these methyl orange and biphenyl because of the wide difference in their polarity. Biphenyl will give a higher Rf value because it is a non-polar and moves faster on silica gel.
Explanation:
Silica gel is very polar, so polar components (like methyl orange) interact with and move slowly it but non polar components (like biphenyl) move faster on silica gel. Looking at their chemical structures, methyl orange has a polar end while biphenyl is a non-polar hydrocarbon. During silica gel chromatography, the methyl orange will interact with silica gel and move slowly but the biphenyl will move fast on the gel because it does not interact with silica gel. This will result to a very distinct separation of the components.
The biphenyl will therefore have a higher Rf value on TLC because it will move faster and longer on the TLC plate.
Answer: transferred, atoms , ions
Explanation:
An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.
For formation of an ionic compound, the metal lose electrons to form positively charged ions called as cations and non metals gain electrons to form negatively charged ions called as anions.
For example:
Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.
![[Na^+]=1s^22s^22p^63s^0](https://tex.z-dn.net/?f=%5BNa%5E%2B%5D%3D1s%5E22s%5E22p%5E63s%5E0)
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
![[Cl^-]=1s^22s^22p^63s^23p^6](https://tex.z-dn.net/?f=%5BCl%5E-%5D%3D1s%5E22s%5E22p%5E63s%5E23p%5E6)
