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When 25.0 ml of 0.500M H2SO4 is added to 25.0ml of 1.00M KOH IN A COffee cup calorimeter at 23.5 degrees Cel, the temperature rises to 30.17 degrees cel. Calculate delta H of this reaction.
Determine How hot should be the air in a ballon be heated if it has initially a volume of 750. L at the temperature of 20 degree celsius and the final volume must be 1,000.l
This strontium isoptope is radioactive, with a half-life of 28.1 years. Calculate how long (in years) it will take for 5.63g of the isotope to be reduced to .354g by decay
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.077 M in NaClO?
Do I solve this assuming that there are 1.6mL of ethylenediamine in the solution, and somehow use the density of water to calculate?
As gas expands from 1.00 L to 2.50 L against constant pressure of 820 torr. Calculate the change in internal energy for the gas, if 120 J of heat is transferred to the gas during the expansion.
The surrounding solution has a mass of 1298 and its temperature is changed by 12.7 . If the specific heat is assumed to be 4.18 , calculate the change in heat for the surroundings.
Explain why butyl alcohol and isopropyl iodide are not formed in the reaction. Write a suitable mechanism for the cleavage of butyl isopropyl ether with HI at 100 degrees C to form exclusively isopropyl alcohol and 1- iodobutane.
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
Consider a glass of 171 mL of water at 29°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
Provide the following information for a titration analysis involving a titrant and titrand, where the titrand is a weak, diprotic acid (Ka1 = 1.00 x 10-4; Ka2 = 1.00 x 10-8; Vol=0.01000 L; FH2A=0.1000 M) and the titrant is a strong monoprotic base..
A 0.7445 g sample containing only CaCO3 and Mg(OH)2 is titrated using 0.3004 M HNO3. If it takes 31.75 mL of HNO3 to reach the end point of the titration
What is the total pressure in a 20.0 L flask 20.0°C, which contains 0.127 moles of H2 and 0.288 moles of N2?
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