Chemistry, 05.02.2021 20:10 adam15200031

4. Given the reaction equation: C + 2S → CS2 AH = 89.3 kJ A) Is the reaction endo or exothermic? B) What is the heat change if 2 moles of C are reacted? C) What is the heat change if 1 mole of S were reacted? D) What is the heat change if 20 g of Carbon is reacted?

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explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

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c. because step up transformer steps up the input voltage i.e increases the input voltage

the number of turns are greater on the secondary side of step up transformer

transformer does not handle dc current

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the answer is a for sure mark brainliest i had got this right on usatestprep

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Following are the advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is useful to provide us with better information about the graph.3) it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry, parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.

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4. Given the reaction equation: C + 2S → CS2 AH = 89.3 kJ A) Is the reaction endo or exothermic? B)...

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