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Physical Chemistry
A 2.0 L gas sample at 20 Calvin degree must be cooled to what temperature for the volume to change to 1.0 L? Show at least two different ways to solve this problem.
Physical Chemistry
Is water the only substance that expands when frozen?
Physical Chemistry
lead has a law specific heat capacity and is easily melted. How many joules of energy are needed to raise the temp of 2* 10^3 of Pb(s) from 298k to its melting point?
2) A 1.0lb of gold ingot must be heated from 29c to its melting point. Calculate the energy required.
2) A 1.0lb of gold ingot must be heated from 29c to its melting point. Calculate the energy required.
Physical Chemistry
calculate the heat energy required to raise the temperature of 2.2kg H2o(l) from 25c to 98c?
2) 500g of pure Al(s) must be heated from 20c to its melting point. How many joules of energy will be needed?
3)A 200.0 block of H2O(s) is to be heated from -20c to -5c. Determine the heat required?
2) 500g of pure Al(s) must be heated from 20c to its melting point. How many joules of energy will be needed?
3)A 200.0 block of H2O(s) is to be heated from -20c to -5c. Determine the heat required?
Physical Chemistry
DEAR SIR
I HAVE A QUESTION ABOUT UOP 163 (H2S DETERMINTION IN CRUD OIL WITH AgNO3 POTENTIOMETRIC). IF I HAVE HIGH (1.5%H2S)OR LOW (25 ppm)CONCENTRATION H2S IN LIQUID ,VOLTAGE WILL BE STARTED IN -600mV OR NO?ON OTHER WORD NERNST EQUATION DEPEND ON CONCENTRATION BUT HOW MUCH DEPEND ON CONCENTRATION iN CONCENTRATION LIQUID IS IT THIS RELATION OK OR NO?E=E-0.0591 [S2-]
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I HAVE A QUESTION ABOUT UOP 163 (H2S DETERMINTION IN CRUD OIL WITH AgNO3 POTENTIOMETRIC). IF I HAVE HIGH (1.5%H2S)OR LOW (25 ppm)CONCENTRATION H2S IN LIQUID ,VOLTAGE WILL BE STARTED IN -600mV OR NO?ON OTHER WORD NERNST EQUATION DEPEND ON CONCENTRATION BUT HOW MUCH DEPEND ON CONCENTRATION iN CONCENTRATION LIQUID IS IT THIS RELATION OK OR NO?E=E-0.0591 [S2-]
BEST REGARDS
TONE
Physical Chemistry
DEAR SIR
I HAVE A QUESTION WHAT IS DIFFERENT BETWEEN SALINITY AND TDS IN CONDUCTIVITYMETER INSTRUMENT?
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I HAVE A QUESTION WHAT IS DIFFERENT BETWEEN SALINITY AND TDS IN CONDUCTIVITYMETER INSTRUMENT?
BESTR REGARDS
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Physical Chemistry
if in a chemical reaction No. of molecules not change;volumes of gases are given in place of molar concentrations.Can we put these volumes in the equation(in place of molar concentrations)to find the equilibrium const.of the reaction?if yes,than why?
Physical Chemistry
is it true that in a gaseous reaction where no' of molecules not change we can use vlumes of gases in place of their molar concentration to calculate the equilibrium constant why is it not so for the reactions where no. of molecules change?
Physical Chemistry
what are co-ordinate bonds?
Physical Chemistry
20ml each of O2 and H2 and 10ml of CO are exploded in an enclosure. What will be the volume and composition of the mixture of gases when they are cooled to room temperature?
