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Problem- A sample of gas occupies a volume of 68.2 mL. As it expands, it does 125.3 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas?
Express your knowledge to solve the above question
Write the balanced net ionic equations for each of the following compounds with aqueous NH4OH 1. HCl (aq) 2. H2SO4 (aq) 3. HNO3 (aq) 4. NaOH (aq)
CO 5) What should be the coefficient of hydrogen, H2, in the following equation in order to make it balanced? 2 Al + 3 H2SO4 ---> Al2(SO4)3 + ? H2
The compound produced a green flame when burnt and a white precipitate formed when ethanolic silver nitrate was added. In addition, a solution of chromic acid changed from an orange color to clear as a green precipitate formed when compound was ad..
a zero-order reaction has a constant rate of 3.40times10-4 . if after 45.0 seconds the concentration has dropped to
Calculate delta S for the heating of 1 mole of SO2(g) from 75°C to 1350°C at a constant pressure of 1 bar.
Calculate the enthalpy change for the neutralization reaction. Calculate the experimental error compared to the accepted your value in question 2.
Select whether each statement is True of False about the following reaction. The reaction is endothermic in the forward direction. PCl5(g) « PCl3(g) + Cl2(g)
The average person burns 12000 kJ of food energy per day(2,800,000 cal.) If the heat of combustion of sugar is 4000 cal/g, and the heat of combustuio of fat is 9000 cal/g: How many grams of sugar must eat to get a day's supply of energy
A sample of gas occupies 1.55L at STP. Remember, pressure at STP is 1.0 atm. What will the volume be if the pressure is increased to 50 atm while the temperature remains constant
Which of the following buffer systems would be the best choice to create a buffer with the pH= 9.00? For the best system , calculate the ratio of the masses of the buffer components required to make the buffer.
Identify one acid-base conjugate pair. What is the conjugate base of the HNO2 acid
The weight of the initial mixture is 5.020 g, and the weight of the resulting anydrous compounds is 2.988 g. Which choice is closest to the percent by mass of copper(II) sulfate pentahydrate in the original mixture? Steps?
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