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When 1 mol of HF is added to 1kg of water, the freezing point decreases by 1.9 C, but when 1 mol of HBr is added, the freezing point decreases by 3.7 C. Which is more highly separated into ions, HF or HBr?
if it takes 6.02 kJ of heat energy to melt a mole of ice, how much heat is absorbed when 6.30 g of water melts?
A 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 J/°C.
A certain atom is bombarded with a neutron and changes into Lithium 7. What was that atom? (It is a fission reaction)
what is the molar mas of gas if 1.20g of the gas has a volume of 235 mL at STP? A 1.26 sample of He gas has a pressure of .123 atm and volume of 32.6 L. what is the temperature in degrees C?
What step in the synthesis of trans-cinnamic acid is a reaction pertinent to the synthesis of molecular chloride?
3.8 g of a hydrocarbon fuel is burned in a calorimeter that contains 234 grams of water initially at 25.00 ?C. After the combustion,the temperature is 26.55 ?C.
If a mixture of gases contained 78% nitrogen at a pressure of 984 torr and 22% carbon dioxide at 345 torr, what is the total pressure of the system
Multiple choice questions in organic chemistry - Which of the following statements are true about the processes of melting and freezing?
a sample of N2O3(g) has a pressure of 0.019atm. the temperature(in K) is then double and the N2O3 undergoes complete decompositopn to NO2(g) and NO(g).
The heat effect of the neutralization reaction NaOH(aq) + HCl(aq) is measured in an open adiabatic solution calorimeter (not a coffee cup calorimeter) The heat capacity of the calorimeter itself is 456 J/K.
Describe the apparent relationship between H3O and OH concentrations when an endpoint is reach in acid-base titration.
consider the following reaction, equilibrium concentrations and equilibrium constant at a particular temperature. determine the equilibrium concentration of NO2 (g)
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