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Why you measure enthalpy in H instead of H?
The total enthalpy of a system is called "H." That stands for "total enthalpy." It is not a measure of enthalpy. Enthalpy is measured in the SI or metric system in joules (abbreviated as J) or in customary units such as British Thermal Unit (BTU) or calories (cal).
Why do we have to use molality for our calculations, instead of the more common unit of molarity?
Molality is used for calculations instead of molarity because it is a more accurate measure of concentration. Molarity can change with temperature, while molality remains constant. This makes molality more reliable for certain calculations, especially those involving changes in temperature.
Would the enthalpy change be different if solid sodium hydroxide pellets were added to hydrochloric acid instead of adding hydrochloric acid to sodium hydroxide solution?
Yes, the reaction involving the solid is actually an individual step in the equation of the reaction between the solutions. If you were to add the change in enthalpy of the reaction with the solid NaOh to the change in enthalpy of the other step in the reaction (that's adding water and the NaOh pellets) you would find the sum equivalent to the change in enthalpy of the reaction involving the two solutions (this is supported by Hess's law). I suggest that you consider Hess's law for more information.
Why is it difficult to determine the enthalpy change of thermal decomposition of potassium hydrogencarbonate to potassium carbonate?
The reaction which forms potassium hydrogen carbonate from potassium carbonate, K2CO3 + H2O + CO2 --> KHCO3 is difficult to perform in a laboratory; the same goes for the decomposition. Hence instead of simply using a calorimeter or similar apparatus, it is necessary to use another reaction route and a Hess Cycle using two reactions such as: reaction A: K2CO3 + 2HCl --> 2KCL + H2O +CO2 reaction B: KHCO3 + 2HCl --> KCl + H2O +CO2 The enthalpy change of the decomposition of potassium hydrogen carbonate will be twice the enthalpy change for reaction B, minus the enthalpy change for reaction A.
Why Do Medical Establishments Typically Use Percent Concentration instead of Molarity?
Medical establishments typically use percent concentration instead of molarity because percent concentration provides a more intuitive understanding of the amount of drug or substance in a given volume. This can be easier for healthcare professionals and patients to comprehend compared to molarity, which involves more complex calculations related to the molar mass and volume of a solution.
Why you measure enthalpy in H instead of H?
The total enthalpy of a system is called "H." That stands for "total enthalpy." It is not a measure of enthalpy. Enthalpy is measured in the SI or metric system in joules (abbreviated as J) or in customary units such as British Thermal Unit (BTU) or calories (cal).
Why do we have to use molality for our calculations, instead of the more common unit of molarity?
Molality is used for calculations instead of molarity because it is a more accurate measure of concentration. Molarity can change with temperature, while molality remains constant. This makes molality more reliable for certain calculations, especially those involving changes in temperature.
Do cephalopods have a internal plate instead of a shell?
yes
Why calculate a square root cannot be done in Microsoft word?
Microsoft Word is not a spreadsheet program. It can do some very simple calculations, but if you want to do some more involved calculations, use Excel instead.
What is the value of Vedic Maths For Kids for quick calculations?
Vedic Maths enables kids to perform calculations faster compared to the usual method. It promotes mental calculations. It helps kids to understand Maths instead of fear it. It also improves the spiritual side of the Kid's personality.
Members of this mollusk class have an internal plate instead of a shell?
Cephalopods
Would the enthalpy change be different if solid sodium hydroxide pellets were added to hydrochloric acid instead of adding hydrochloric acid to sodium hydroxide solution?
Yes, the reaction involving the solid is actually an individual step in the equation of the reaction between the solutions. If you were to add the change in enthalpy of the reaction with the solid NaOh to the change in enthalpy of the other step in the reaction (that's adding water and the NaOh pellets) you would find the sum equivalent to the change in enthalpy of the reaction involving the two solutions (this is supported by Hess's law). I suggest that you consider Hess's law for more information.
Is the mouse is a external or internal?
A mouse is an external device, meaning it is outside the computer, and has to connect to it in some way, instead of being built into it.
Why thermodynamic scale is taken in kelvin instead of degree centigrade reply please its very very urgent?
It is convenient to have a temperature scale, which is positiv only. 0 Kelvin is really the coldest point.
Is a grasshoper an invertebrate?
Grasshoppers are invertebrates, because they don't have an internal skeleton. Instead, they have it on the outside. :)
What happens when you add antifreeze to your engine instead of oil?
If you run it that way you will cause internal damage.
Are stick bugs invertebrates?
All insects are invertebrates because they have an exoskeleton instead of an internal skeleton with a backbone.
