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What is the value for s reaction for the following reaction given the standard entropy values?
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What value should the heat of the reaction have in a spontaneous reaction?
It can be + or - depending on the value of the entropy (∆S). Recall, that ∆G = ∆H - T∆S and for a spontaneous reaction, ∆G must be negative, so you can see how this will depend on the values and signs of both enthalpy and entropy.
What is an exact quanitity people use for comparison?
A standard, as in the standard values of weights and measures.
What is the definition of Experimental value?
the values you actually get when you do the procedure, these are then compared to the standard values
Why do you need to use a standard when performing electrophoresis?
To compare the atomic mass and rf values with the standard
Why is platinum coated with platinum black used in the standard hydrogen electrode?
The platinum black provides a very high surface area that promotes the speed of reaction at the electrode and thereby virtually eliminates overpotential at the standard hydrogen electrode. An overpotential would lead to misleading values of potential of other electrodes compared with a standard hydrogen electrode that manifested overpotential.
What value should the heat of the reaction have in a spontaneous reaction?
It can be + or - depending on the value of the entropy (∆S). Recall, that ∆G = ∆H - T∆S and for a spontaneous reaction, ∆G must be negative, so you can see how this will depend on the values and signs of both enthalpy and entropy.
If comparing a solid liquid or gas phase of H20 which has the highest entropy?
entropy is greater the more possible arrangements for energy there are, which increases as the molecules become more mobile, so entropy is high in a gas, lower in a liquid, and lowest in a solid.
A What is empirical rule?
For data sets having a normal, bell-shaped distribution, the following properties apply: About 68% of all values fall within 1 standard deviation of the mean About 95% of all values fall within 2 standard deviation of the mean About 99.7% of all values fall within 3 standard deviation of the mean.
What are the relationship between values goals and standard?
Relationship between values goals and standard
Carbon resistors are not available in market of each number of resistance why?
carbon resistors of standard values are manufactured because other values can be obtained by series and parallel combination of standard values. Moreover even standard values do not offer exact Resistance's will have tolerance
What is the definition of Experimental value?
the values you actually get when you do the procedure, these are then compared to the standard values
What is an exact quanitity people use for comparison?
A standard, as in the standard values of weights and measures.
If the variance of the data values in a sample is 121 what is the standard deviation of the data values?
11
What can be said of an ellipse when the two denominator values in its standard equation are the same?
When the two denominator values in the eclipse standard equation are the same, it can be said to be in foci.
Convert the following decimal values to binary values 118?
0111 0110
Conversion of H2O liquid to H2O gas requires energy but why evaporation is a spontaneous reaction?
When H2O(l) evaporates to H2O(g), hydrogen bonds are broken and energy is absorbed. This means it is endothermic. To go from liquid to gas, entropy needs to increase because gas has more disorder, which means a change in entropy (ΔS) should be positive. ΔG = ΔH - TΔS, so when ΔG is negative the reaction is spontaneous. For ΔG to be negative TΔS should be greater than ΔH. This can be shown mathematically (e.g. T is equal to 373.15 and the values of ΔS and ΔH can be calculated) and thus the evaporation of H2O is spontaneous.
Find the mean,median,mode and range of the following values:17,7,11,13,2,12,7.?
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