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Leya [2.2K]
2 years ago
6

A sample of solid ammonium chloride decomposes on heating

Chemistry
1 answer:
elena55 [62]2 years ago
3 0

∣αηsωεя∣: −

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How is the enthalpy of reaction shown in this potential energy diagram?
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What kind of chemical change do you think occurs when a banana peel turns brown in the open air?
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How would you measure the effect of reactant concentration on the reaction rate
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3 years ago
For each set of elements represented in this periodic table outline, identify the principal quantum number, n, and the azimuthal
Mazyrski [523]
<span>Answer: Yes, the n for potassium would be 4, and for neon would be 2. Just count which row of the periodic table you are on. The "L" tells you whether the highest-energy electron is in an "s" orbital (L=0) or a "p" orbital (L=1) or a "d" orbital (L=2) or an "f" orbital (L=3). The manner in which these orbitals are filled is: for each of the first three rows (up to argon), two electrons in the "s" orbital are filled first, then 6 electrons in the "p"orbitals. The potassium row also starts with filling the "s" orbital at the new "n" level (4) but then goes back to filling up the "d" orbitals of n=3 before it fills up the "p"s for n=4. OK, so potassium has n=4, L = 0, while neon has n=2, L = 1. The quantum numbers connected with "an element" are always referring to the highest-energy electron, i.e., the one that was absent in the predecessor element of the periodic table. When you go from potassium to calcium, you still get n=4, L = 0, because there are two positions in the "s" orbital. But when you go from calcium to scandium, suddenly you go back to n=3, L = 2 ("d" orbital).</span>
3 0
4 years ago
Which of these structure represent a soap? a. CH3CO2-K+ b. CH3(CH2)14CO2-NA+. c. CH3(CH2)12COOH. d.CH3(CH2)7CO2(CH2)7NA
levacccp [35]
I  think the correct answer from the choices listed above is option B. It would be CH3(CH2)14CO2-NA+ that would represent the structure of a soap. A soap<span> is a </span>salt<span> of a </span>fatty acid. <span>Soaps for cleaning are obtained by treating vegetable or animal oils and fats with a strong </span>base<span>, such as </span>sodium hydroxide<span> or </span>potassium hydroxide<span> in an </span>aqueous<span> solution.</span>
7 0
4 years ago
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