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How much energy is needed to melt 25.4 grams of iodine?
25.4 g (I2) / 254 (g/mol I2) = 0.100 (mol I2)Melting heat = Evaporization heat:This is because of sublimation, Iodine's Triple point (T=113°C, p=12.1 kPa)is lower than its Melting point (113.7 °C, 100kPa).∆Hsub(298K) = 62.42kJ/molSublimation heat needed = 0.100 (mol I2) *62.42 kJ/mol = 6.24 kJ
Write a program to multiply two 8 bit signed numbers using 8085 microprocessor?
s v i e t k a n u r u .t k MULTIPLICATION OF TWO 8 -- BIT NUMBERS AIM: To perform multiplication of two 8 -- bit numbers using 8051 instruction set. ALGORITHM: 1. Get the data in A -- reg.2. Get the value to be multiplied in B -- reg.3. Multiply the two data4. The higher order of the result is in B -- reg.5. The lower order of the result is in A -- reg.6. Store the results. PROGRAM: ORG 4100CLR CMOV A,#data1MOV B,#data2MUL ABMOV DPTR,#4500MOVX @DPTR,AINC DPTR MOV A,BMOVX @DPTR,AHERE: SJMP HERE
