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How many different types of resonance structures can be drawn for the ion SO32.
Determine the temperature change is caused by heat energy and using a beaker that contains 100 mL of H 2 O thermally insulated from its surroundings, one mol of solid CaCl 2 is mixed and solution is stirred
what is a good conductor at high temperature and a poor conductor at low temperature? YBa2Cu3O7 GaAs S Cu
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
how many moles of gas are there in a 45.0 l container at 25.0 degress celcius and 500.0 mm hg
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 6.10 MJ of energy (in the form of heat)
What volume of nitrogen gas is produced from the liquid nitrogen spill if the temperature of the room is 25 degrees C at 1.00 atm?
The boiling point of another member of this homologous series was found to be 309 rm K. What is the likely molecular formula for this compound?
95.0 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 73.4 kj of heat. Before the reaction, the volume of the system was 7.40L .
Some MF2 is dissolved in water at 25oC to make a saturated solution. (M is a mystery metal - it's identity can be ignored.) Some of the solution is removed and tested
Quicklime (CaO) is produced by thermal decomposition of calcium carbonate(CaCO3). Calculate the volume of CO2 at STP produced form the decomposition of 146 g CaCO3 by the reaction: CaCO3(s) -> CaO(s) + CO2(g)
After the addition of a large excess of acid (in comparison with the acid volume needed to reach the equivalence point) D) tell how many millileters of acid are required to reach the equivalence point
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