Answer:
46148 J
Explanation:
You need to calculate the heat associated with each of the following steps. You will need to know some specific heats (they are probably given to you somewhere).
Step #1: Condensation
Step #2: Cooling from 100 C to 0 C
Step #3: Freezing
Step #4: Cooling from 0 C to -32 C
Step #1:
q = mC
q = 15 g (-2256 J/g )
q = -33840 J
Step #2:
q = mcΔT
q = 15 g (4.19 J/g/C)(-100 C)
q = 6285
Step #3:
q = mC
q = 15 g (-334 J/g)
q = -5010
Step #4:
q = mcΔT
q = 15 g (2.11 J/g/C)(-32 C)
q = -1013
Keep in mind the - signs indicate heat is being released. To calculate the total heat released, add the individual heats calcualted at each step:
Total heat released = 33840 + 6285 + 5010 + 1013 = 46148 J
<span>The pH scale is a logarithmic scale. Each change of 1 unit in pH represents a 10-fold change in hydrogen ion concentration. As the pH gets smaller the hydrogen ion concentration gets larger. Since you have gone from pH 5 to pH 3 there is a 100-fold increase in [H+].
For pH = 5; [H+] = antilog 10^-pH = 1.0 x 10^-5 M
For pH = 3; [H+] = antilog 10^-pH = 1.0 x 10^-3 M
(1.0 x 10^-3)/(1.0 x 10^-5) = 1.0 x 10^2 hope this helps</span>
HCl is more soluble in diethyl ether.
<h3>Reason ; </h3>
H-Cl is a covalent molecule with a dipole-dipole interaction. As a result, diethyl ether may easily replace HCl's dipole-dipole interaction to dissolve it. As a result, HCl dissolves more easily in diethyl ether than NaCl. As a result, HCl(g) dissolves more easily in diethyl ether than NaCl (s).
<h3>What is Covalent molecule ?</h3>
A covalent bond is a chemical relationship that requires the sharing of electrons between atoms to generate electron pairs. These electron pairs are known as shared pairs or bonding pairs, and covalent bonding is the stable equilibrium of attractive and repulsive forces between atoms when they share electrons.
<h3>What is dipole-dipole interaction ?</h3>
Dipole-dipole interactions are weak interactions that occur when permanent or induced dipoles come into close proximity. These forces are referred to collectively as Van der Waals interactions. Proteins have a vast number of these interactions, the strength of which varies greatly.
To know more about Covalent bond please click here ; brainly.com/question/3447218
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