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An average sample of chlorine contains 75.77% chlorine-35, with an atomic mass of 34.969 amu (atomic mass units), and 24.23% chlorine-37, with an atomic mass of 36.966 amu. What is the average atomic mass of chlorine?
The weighted average is the sum of each individual nuclide, multiplied by its isotopic abundance. So, we simply do the arithmetic: $0.7577xx34.969+0.2423xx36.966 = ???$ amu Then look at to...
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The Cl-Cl bond energy is 243 kJ/mol. Therefore the formation of a single bond between chlorine atoms ?
A) should require the absorption of 243 kJ per mole of $Cl_2$ formed.
B) should result in the release of 243 kJ per mole of $Cl_2$ formed.
The bond energy, or bond , expresses the energy needed to break a chemical bond, that's why it will always be listed as a positive value. In your case, 243...
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When the equation $Fe + Cl_2 -> FeCl_3$ is balanced, what is the coefficient for $Cl_2$?
2Fe + 3Cl2 -> 2FeCl3
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For the reaction $2Na(s) + Cl_2(g) -> 2NaCl(s)$, how many grams of $NaCl$ could be produced from 103.0 g of Na and 13.0 L of $Cl_2$ (at STP)?
You have to search the between Na and $Cl_2$ You have $ n= "mass"/"molecular mass" = (103,0 g)/(23,0 (g/(mol))) = 4,47 mol $ of Na. As 1 mole occupies 22,4...
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Which option contains a $2*g$ mass of sodium atoms....
$1.$ $5.24xx10^22*"sodium atoms?"$
$2.$ $6.022xx10^24*"sodium atoms?"$
$3.$ $3.12xx10^23*"sodium atoms?"$
$4.$ $5.24xx10^22*"sodium atoms?"$
We know that $1*mol$ contains $6.022xx10^23$ individual sodium atoms, and has a mass of $22.99*g$. And thus for $1.$ there is a $2*g$ mass of $Na$. For $2.$ there is...
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There are two compounds of titanium and chlorine. One compound contains 31.04% titanium by mass, and the other contains 74.76% chlorine by mass. What are the ratios of titanium and chlorine atoms in the two compounds?
The idea here is that you need to use the of the two in the two to find their . Once you have their , you also have the ratio...
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In the reaction $2Na+Cl_2 -> 2NaCl$, how many moles of $Cl_2$ react with 100 moles of sodium to form sodium chloride?
Remember that is a NUMERICAL (or extensive) quantity. I could say just as correctly that 2 dozen sodium atoms react with 1 dozen chlorine molecules to form 2 dozen sodium...
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How do you balance $CS_2 + Cl_2 -> C Cl_4 + S_2Cl_2$? What is the mole ratio of $Cl_2$ to $C Cl_4$?
The equation above is certainly balanced. I don't know whether it is valid or not, inasmuch as I have never seen this reaction done. Given the balanced equation 3 equiv...
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In the reaction $SO_2Cl_2 harr SO_2 + Cl_2$, heat is evolved. What happens when chlorine ($Cl_2$) is added to the equilibrium mixture at constant volume?
Increasing the concentration of $Cl_2$ will increase the concentration of the products on the right side of the equilibrium equation. To decrease the concentration of the products the equilibrium will...
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For the reaction below, $K_p=81.9$. A reaction mixture contains $P_(I_2)=0.114$ atm, $P_(Cl_2)=0.102$ atm, and $P_(ICl)=0.355$ atm. Find the equilibrium values for $P_(I_2)$, $P_(Cl_2)$, and $P_(ICl)$?
Well, I would never recommend this "trial-and-error" method... I don't see why you should ever "have" to do it... just use the quadratic formula on the resulting quadratic equation. I...
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