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a graduated cylinder reads 4 ml of water.then a shell is dropped into it and the water level rises to 12 ml.what is the volume of the shell?
Calculate the mass percent of a solution that is prepared by adding 35.9 gram of NaOH to 30.2 g of H2O.
2.00 x10^2 mL of .500 M HCl is mixed with 2.00 x 10^2 mL of .250 M Ba(OH)2. how many moles of water are produced in the reaction
A cook wants to heat 1.35 of water from 32.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn.
15.0 moles of gas are in a 8.00 L tank at 21.0C. Calculate the difference in pressure between methane and an ideal gas under these conditions
clockwise direction around a circular track with a constant speed of 200 km/hr. if is at the southernmost end of the track then determine the velocity of the car?also express your answer in M/S
Calculating Kc, Given the amount of reactant in grams in a container at a temperature and amount produced in moles, calculate Kc:
C3H8 + 5O2 reacts to yield 3CO2 + 4H2O +488 kJ What is the heat released if 2.5 moles of C3H8 reacts completely with oxygen?
how much heat energy in calories is needed to raise the temperture 10.0g of water 6.0C
Compute the change in temperature for 4.50 grams of Calcium chloride CaCl 2 dissolved in 90.0 mL of water H 2 O. (Assume that the calorimeter absorbs no heat )
The specific heat capacity of silver is 0.240 J/(g x degrees C). Calculate the energy (in kJ) required to raise the temperature of 263 g Ag from 273K to 278 K.
Detremine the concentration of chromate solution - Potassium chromate has an absorbance value
Suppose that 160 g of ethanol at 30?C is mixed with 230 g of ethanol at 76?C at constant atmospheric pressure in a thermally insulated vessel.
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