A quantity of 50.0 mL of 1.200 M HCl was mixed with 50.0 mL of 1.200 M NaOH in a beaker that was placed in a coffee-cup style calorimeter. The mass of the empty beaker was 52.689 g. When the reaction was complete, the temperature had increased by 4.96 oC. The beaker and the solution collectively had a mass of 149.988 g. Assume the specific heat of the solution is 4.184 J g-1 oC-1 and the specific heat for the beaker is 0.840 J g-1 oC-1. Determine the enthalpy of neutralization of HCl and NaOH based on these data. Express your answer in kJ/mol. You must upload work for this question to earn credit.

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap