Mole-specific

Qf298° is —111540cal/mole specific heat, 0.262cal/g at 25° latent heat of fusion is -5355cal/mole at 310° (Ref 6)... 

Specific activity of a radiopharmaceutical may be defined as the amount of radioactivity per unit mass of a radioisotope or a labeled compound. For example, if 100 mg l3lI-labeled albumin contains 150 mCi l3lI radioactivity, its specific activity would be 150/100, i.e., 1.5 mCi/mg. Specific activity is usually expressed in units such as Ci/g, mCi/mg, or MBq/mg. It is also expressed in terms of the radioactivity per mole of a labeled compound, e.g., mCi/mole, MBq/mole, mCi/pmole, or MBq/p,mole. Specific activity is usually provided on the product label. 

Compound Melting point °C Boiling point °C Heat of formation -AHf kcal/mole Specific gravity... 

Temperature (°C) Henry constant (cm3 STP g atnf1) Heat of adsorption4 (kcal/mole) Specific area4... 

Consider an adiabatic tubular reactor (Davis, 1984)[15] with the following data length L = 2 m, radius Rp = 0.1 m, inlet reactant concentration cO = 30 moles/m3, inlet temperature TO = 700K, enthalpy AH = -10000 J/mole, specific heat capacity Cp = 1000 J/kg/K, activation energy Ea = 100 J/mole, p = 1200 kg/m3, velocity uO = 3 m/s, and rate constant kO = 5 s-1. Dimensionless concentration (y) and dimensionless temperature (9) are governed by material and energy balances as ... 

C => molar heat capacity if n is in moles, specific heat if n is a mass AT => change in temperature Tfinal - Tinitial... 

The total chemical exergy of the resomce is finally calculated as boh,res = Abf+ X ch,i+ X rs- In so doing, tables of exergies per unit mass or per mole (specific exergy) can be constracted for each resource. 

No. Ratio of epoxy and CMPA (mole/mole) Specific rotation of solution [a] Optical rotation of film a... 

Chloro-3-methyl-2-butene MW= 104.6 g/mole Specific gravity = 0.98 g/mL... 

Now, the macroscopic behavior of all systems, whether in equilibrium or nonequilibrium states, is classically described in terms of the thermodynamic variables pressure P, temperature T, specific volume V (volume per mole), specific internal energy U (energy per mole), specific entropy S (entropy per mole), concentration or chemical potential /r, and velocity v. In nonequilibrium states, these variables change with respect to space and/or time, and the subject matter is called nonequilibrium thermodynamics. When these variables do not change with respect to space or time, their prediction falls vmder the subject matter of equilibrium thermodynamics. As a matter of notation, we would indicate a nonequilibrium variable such as entropy hy (r,t), where r is a vector that locates a particular region in space (locator vector) and t is the time, whereas the equilibrium notation would simply be . 

Shell thickness / nm H2/NH3BH3 mole / - Specific surface area / m g Acid sites / mmol g ... 

The list contains symbols and indices used throughout the book. Note in some cases the same symbol has been used for a mole-specific and a mass-specific quantity,... 

Normally the relation between two extensive variables will form an intensive variable. This special property is often utilized in the description of systems of substance here intensive variables are formed by division by the amount of substance n of the system, by division by the system volume V or by division by the system mass m. Hereby mole-specific, volume-specific and mass-specific quantities are obtained. A well-known example of a volume-specific state variable is the density g, which is the system mass m divided by the system volume V. 

For state variables that may occur as intensive as well as extensive state variables, one should specify the nature of the variable to avoid confusion. If for example a specific heat capacity c is given it should always be made clear from units, indices or notation whether a mole-specific or a mass-specific heat capacity is considered. 

Specify what physical quantity should be multiplied by the mass-specific heat capacity to convert it into a mole-specific heat capacity ... 

Generally, in thermodynamic calculations the mole-specific heat capacity is used, defined by... 

The mole-specific heat capacity c of a substance is defined as the ratio between added heat 6Q per mole of substance and the temperature increment dT... 

Mole-specific heat capacity at constant volume is denoted c and mole-specific heat capacity at constant pressure is denoted Cp. Often, in technical calculations the so-called mass-specific heat capacity is used, defined by... 

No standardized or incorporated list of symbols distinguishes between mole-specific and mass-specific heat capacity. In calculations, therefore, one should always specify by units or notation which kind of heat capacity is applied. 

In the present book the heat capacity of systems is always denoted C with the unit (J/K) mole-specific and mass-specific heat capacity are both denoted c with unit (J/molK) and (J/kgK), respectively. 

Given the mole-specific heat capacity c of a substance (J/molK) how is this value converted into a mass-specific heat capacity c (J/kg K) ... 

A system consists of 5.00 kg of water in temperatnre equilibrium at 25.0 °C. A heat quantity of Q = 14630 J at constant pressure is added to the system from its surroundings so that the water temperature is increased to 25.7°C. Calculate the heat capacity of the system Cp (J/K), the mole-specific heat capacity of the water Cp (J/molK) and the mass-specific heat capacity Cp (J/kgK) of the water. The molar mass of H2O is 18.02 g/mol. 

The first law, equation (3.2), introduces the internal energy 17 as an extensive variable with the unit (J) (see section 2.3). In the description of systems of pure substances, however, it is expedient to use intensive, rather than extensive variables. Therefore, the corresponding mole-specific quantity of the unit (J/mol) is often used. 

There is no standardized or universally-accepted notation that distinguishes the internal energy (J) of a system from the mole-specific internal energy of a pure substance (J/mol). In the following sections, the common symbol U will be used for both of these quantities. Which quantity is of concern should be clear from the context, units and other designations in the text. 

Q 1. 100 g of water vapour is heated so that the temperature is increased by 15 °C at constant volume cy = 25.3 J/molK for H20(g). Calculate the increase in mole-specific internal energy AU (J/mol) ... 

Q 2. Does it make sense to talk about mole-specific internal energy U (J/mol) for a) a saturated NaCl solution in water b) crystalline NaCl(s) c) a melt of NaCl(f) ... 

In practical calculations and measurements, the enthalpy H is found as an extensive system-dependent quantity of unit (J), and as an intensive mole-specific quantity of unit (J/mol) see section (2.3). Since there are no standardized symbols distinguishing these cases, the common symbol H is used universally the meaning in each individual case will be seen from the units and other designations used in the context. 

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