EM 103 TEST T3C DATE I-- ECC Indicate true or false in each of the following. a
ID: 697422 • Letter: E
Question
EM 103 TEST T3C DATE I-- ECC Indicate true or false in each of the following. a Pressure is force per onit area b) Boyle's law states that the volume of a given mass of gas is inversely e) Ch PROF ONWUNAKA proportional to the pressure at constant temperature arles law: at constant pressure, the volume of a given mass of gas is directly proportional to the absolute temperature d) At Standard Temperature and Pressure (STP), the temperature is 25 C (298 K) and the pressure is 1 atm (760 torr) e) The equation for the combined gas law for a fixed amount of gas D Avogadro's law states that equal volumes of gases, measured under the same conditions of temperature and pressure, contains equal number of molecules Vi/ni-V/n R is a gas constant g) The ideal gas law equation is PV-nRT Complete the following. h) Heat is i) Heat flows between system and environment from a region of which is equal to 0.0821 Liter atm./mole K flowing in or leaving a system. temperature. temperature to a region of reaction heat is absorbed and in an j) In an reaction heat is evolved. and in an In an exothermic reaction, heat (q) is endothermic reaction, heat (q) is(negative/positive) k) The change in enthalpy for a reaction is the difference between the enthalpies of and D)Explanation / Answer
1)
a) Pressure is Force per unit area - True
b) Boyle's law : at constant temperature volume and pressure are inversely proportinal to each other : True
c) charles law: at constant pressure volume of the gas is directly proportinal to temperature : True
d) At STP : temp is 0 o C or 273.15 K and pressure is 1 atm. Given statement is FALSE
e) TRUE
f) TRUE
g) True and True.
Answering only first question as per the policy guidelines
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