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Question- A sample of O2 gas is stored at 30.0 C and 755 torr. If the volume was 125 mL, how much did the oxygen weigh?
I require skilled aid to answer the given problem
53.576 g magnesium sulfate di hydrate are dissolved in 250.00 ml of1.50 m barium nitrate solution to produce baso4
A solid sphere of a metal with a mass of 0.7371kg has a diameter of 50.0mm. Calculate the density of metal. Calculate the moles of FeSO4 present in an iron tablet containing 400mg FeSO4.
Vinegar is an aqueous solution of acetic acid. By law, it must contain 4 g acetic acid per 100 ml solution. What approximate volume of 0.10 M of NaOH would be neededto titrate a 15.00 ml aliquot of commercially availabe vinegar?
1.9 In the spectrum of atomic hydrogen, several lines are generally classi?ed together as belonging to a series (for example, Balmer series, Lyman series, Paschen series), as shown in Fig. 1.28. What is common to the lines within a series that mak..
How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy
5.00 ml of a water sample was titrated for hardness with 4.15ml of 0.0200m edta. write an equation for the reaction and
How would the calculated molar mass change(increase,decrease,no change) if the following experimental problems were encountered? explain the reason for your answer. (a)the unknown was impure and only part of the unknown dissolved in the lauric aci..
You have separate solutions of HCl and H2SO4 with the same concentrations in terms of molarity. You wish to neutralize a solution of NaOH. Which acid solution would require more volume (in mL) to neutralize the base. Why
In which of the following equilibria would the concentrations of the products be increased if the volume of the system were decreased at constant temperature
What happens to the interference pattern that results from the diffraction of electrons passing through two closely spaced slits if the rate of electrons going through the slits is decreased to one electron per hour
calculate the molecule weight of the liquidnbsp if 2.31grams of the vapor of a volatile liquid is able to fill a 498-ml
2A yields 3B; ?H -50 kJ. If 9 moles of B are formed during this reaction, what was the enthalpy change
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