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the energy required to transform a given quantity of a substance from a liquid into a vapor or gas at a given pressure so the enthalpy of them also different. simply can we say heat is released by the substance also differ such as heat capacity of water and HCL. In addition , pressure and volume of them not same at same temperature. thank you
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Choose the accepted standard state values for temperature and pressure?
The accepted standard state values for temperature is 298 K (25°C) and pressure is 1 bar (100 kPa).
Why is experimenral value different from literature value in chimestry?
Experimental values may differ from literature values in chemistry due to errors in measurement techniques, equipment calibration, sample purity, or human error in performing experiments. Additionally, variation in experimental conditions, such as temperature, pressure, or reaction time, can also contribute to discrepancies between experimental and literature values.
How should the values found using the zinc electrode as a standard compare with those based on the standard hydrogen electrode?
Perhaps a rephrasing of the question would help; I've never seen a hydrogen electrode so I don't know how it compares to zinc. The process being done would probably also help (are you electroplating or separating oxygen from hydrogen or ...?), as would the solution the electrodes are immersed in (does the solution react with zinc at room temperature, is it being used in a gas, ...?)
Where you could find the standard Rf values for fatty acids and poly unsaturated fatty acids?
You can typically find standard Rf values for fatty acids and polyunsaturated fatty acids in scientific literature, such as research papers, textbooks on chromatography, or chemical databases like ChemSpider or PubChem. These values may vary depending on the specific method and conditions used for their determination.
In the ninhydrin test why do absorbance values for glycine and tyrosine differ?
The absorbance values for glycine and tyrosine differ in the ninhydrin test because tyrosine contains an aromatic ring that reacts with ninhydrin to form a colored product, while glycine lacks this structure. The presence of the aromatic ring in tyrosine leads to a more intense color formation, resulting in a higher absorbance value compared to glycine.
What are the relationship between values goals and standard?
Relationship between values goals and standard
What is difference between Ra and Rz values?
Ra is Indian standard whereas Rz is DIN standard
What is the probability that a standard normal variable will be between the values of -2 and 1?
0.636 approx.
Do men and women differ in values?
yes
How do you find the standard deviation?
The standard deviation (?, pronounced sigma) of a set of values is a measure of how much the set of values deviates from the average of the values. To calculate ? of a complete set of values (as opposed to a sampling),...Calculate the average of the set (the sum of the values divided by the quantity of the values).Calculate the difference between each value and the average calculated in step 1, then square the difference.Calculate the average of all the squares calculated in step 2.The standard deviation is the square root of the average calculated in step 3.
How your own values in relation to hygiene might differ from those of individuals and how to deal with this?
how you own values in relation to hygiene might differ from those of individuals and how to deal with this
What does spread mean in math?
In mathematics, "spread" often refers to the range of a set of values or the extent of variation within a dataset. It can be quantified using different measures, such as the range (the difference between the highest and lowest values), variance, or standard deviation, which indicate how much the data points differ from the mean. Understanding the spread helps in analyzing the distribution and variability of data in statistics.
How do you compute probabilities of a standard normal random variable?
You need to determine the area under the curve between the values in question. This is easy to do because there are tables that give the area values.
What percentage of data values of a normal distribution will fall within one standard deviation below the mean?
34.1% of the data values fall between (mean-1sd) and the mean.
What is the standard measurement of the concentration of hydrogrn ions in a solution?
A property referred to as pH which can take values between 1 and 14.
What is the term used to describe the spread of values of a variable?
The term used to describe the spread of values of a variable is "dispersion." Dispersion indicates how much the values in a dataset differ from the average or mean value. Common measures of dispersion include range, variance, and standard deviation, which provide insights into the variability and distribution of the data.
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
