Answer is equal to 7.51 kJ
Q=mc(delta)T
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1 answer:
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Answer:
a)
b)
c)
Explanation:
The symbols of the isotopes are written like
where,
X is the element
A is the mass number (protons + neutrons)
Z is the atomic number (protons)
<em>a) Iodine-131</em>
The atomic number of iodine is 53. The mass number of this isotope is 131. The symbol is .
<em>b) Iridium-192</em>
The atomic number of iridium is 77. The mass number of this isotope is 192. The symbol is .
<em>c) Samarium-153</em>
The atomic number of samarium is 62. The mass number of this isotope is 153. The symbol is .
Answer:
See attached => LeChatelier's Principle
Explanation:
LeChatelier's Principle => If a stress is applied to a chemical reaction, the reaction chemistry will shift away from the applied stress and establish a new equilibrium having new concentration values different from the original concentration values.
There are three (3) principle stress factors that will cause disturb a chemical reaction and cause it to shift to establish a new equilibrium. These are ...
=> concentration effects,
=> temperature effects, and
=> pressure-volume effects.
The attached notes explain in general terms how to evaluate a chemical reaction under an applied stress factor and determine direction of shift to establish a new equilibrium stability. Compare and apply to the worksheet problems.
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Answers to worksheet (compare to attached notes)
1a. => increasing wt to product side => tilts right => shifts left
1b. => removing wt from reactant side => tilts right => shifts left,
1c. => increasing wt to product side => tilts right => shifts left
2a. => tilts left (excess wt from Hg), shifts right,
2b. => Increase pressure shifts toward lower molar gas volume side (right) Note: apply only to gas phase substances, Hg is in liquid phase.
3a. exothermic rxn => cooling => tilts left, rxn shifts right
3b. endothermic rxn => cooling => tilts right, rxn shifts left
3c. exothermic rxn => cooling => tilts left, rxn shifts right
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