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Would the rf values of the pigments differ if the eluent front rose only halfway rather than to near the top of the TLC sheet?
Yes, the Rf values of the pigments would differ if the eluent front rose only halfway up the TLC sheet. Rf values are calculated as the distance traveled by the pigment divided by the distance traveled by the solvent front. If the solvent front is only halfway, the total distance for the solvent is reduced, potentially resulting in higher Rf values for the pigments compared to a complete run to the top of the sheet. This would affect the separation and identification of the pigments.
What is the value for s reaction for the following reaction given the standard entropy values?
To calculate the standard entropy change (ΔS°) for a reaction, you need to use the formula: [ \Delta S° = \sum S°{\text{products}} - \sum S°{\text{reactants}} ] You would sum the standard entropy values of the products and subtract the sum of the standard entropy values of the reactants. If you provide the specific reaction and the standard entropy values, I can calculate it for you.
How do you calculate enthalpy of formation of Cl2NNF2(g)?
To calculate the enthalpy of formation of Cl2NNF2(g), you can use the standard enthalpy of formation values of the reactants and products involved in the relevant chemical reaction. The enthalpy of formation is determined by the equation: ΔH_f° = ΣΔH_f°(products) - ΣΔH_f°(reactants). You need to find the standard enthalpy of formation for Cl2NNF2(g) and the standard enthalpies of the elements in their standard states (Cl2, N2, and F2) to perform this calculation. If the standard enthalpy values are not available, you may need to use Hess's law and related reactions to derive the value indirectly.
What is the relation between rf value to the molecular size of the pigment?
The Rf value (retention factor) in chromatography is inversely related to the molecular size of the pigment. Smaller molecules typically travel farther up the chromatography medium, resulting in higher Rf values, while larger molecules move more slowly and have lower Rf values. This is because larger pigments may experience more resistance and interactions with the stationary phase. Therefore, by analyzing Rf values, one can infer the relative sizes of different pigments in a mixture.
How do you figure out SATP?
To figure out SATP (standard ambient temperature and pressure), you can refer to common values: 25 degrees Celsius (298.15 K) and 1 atm (101.3 kPa). These values are important for measuring gases at standard conditions.
What are the relationship between values goals and standard?
Relationship between values goals and standard
When comparing electrical usage among customer a small standard deviation indicates that the mean is?
It doesn't matter whether comparisons are involved. A small standard deviation indicates that population values are likely to be clustered closely around the mean.
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
Is the standard deviation of the data values in a sample is 17 what is the variance of the data values?
The variance of a set of data values is the square of the standard deviation. If the standard deviation is 17, the variance can be calculated as (17^2), which equals 289. Therefore, the variance of the data values in the sample is 289.
What is the value for s reaction for the following reaction given the standard entropy values?
To calculate the standard entropy change (ΔS°) for a reaction, you need to use the formula: [ \Delta S° = \sum S°{\text{products}} - \sum S°{\text{reactants}} ] You would sum the standard entropy values of the products and subtract the sum of the standard entropy values of the reactants. If you provide the specific reaction and the standard entropy values, I can calculate it for you.
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.
If the variance of the data values in a sample is 121 what is the standard deviation of the data values?
11
What are the values involved in the selection of a fibre?
List of values: -Strength -Flexibility -Weight -Price -etc
If the variance of the data values in a population is 196 what is the standard deviation of the data values?
14 Apex
A set of 1000 values has a normal distribution the mean of the data is 120 and the standard deviation is 20 how many values are within one standard deviaiton from the mean?
The Empirical Rule states that 68% of the data falls within 1 standard deviation from the mean. Since 1000 data values are given, take .68*1000 and you have 680 values are within 1 standard deviation from the mean.
What is the range of values of standard consistency of cement?
40
White the off in standard from!and indenfy the values of a and c?
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