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A student placed a sample of an unknown metal weighing 23.7412 g in a graduated cylinder containing 13.3 mL of water, and the volume rose to 15.4 mL. Calculate the density of the metal. Show work.
Could this change in oxygen content explain why the fish die
After combining the hexane extracts as well as evaporating the hexane he had 0.49 g of crystals. Explain what is the theoretical yield and percent recovery
If the volume of a side impact air bag in an auto is 30.5 L, what amount of NaN3 must the bag contain to be fully inflated at 25ºC such that the pressure will not exceed 1.10 atm
A current of 1.50 A flows in a conductor for 6.0 s. How much charge passes a given point in the conductor during this time? To separate a 0.25-C charge from another charge, 30 J of work is done. What is the electric potential energy of the charge?
Assuming a temperature of 500 K and expansion against 1. atm of pressure, how much work, in joules, can be done by the system if the octane is completely converted to carbon dioxide and water vapor. What will the enthalpy change be for the process
What is the difference between the terms compound and molecule? Use these words in a sentence
The reactant concentration in a zero-order reaction was 0.100 M after 115 s and 2.50×10-2 M after 350 s. What is the rate constant for this reaction. what is the initial concentration for this reaction. k=3.19*10 -4
If a 220mg piece of gold (density =19.32 ) is hammered into a sheet measuring 2.11.0 , what is the average thickness of the sheet in meters.
placed in 1.00*10^3 g of water at 25C. final temp of this mixture was 26.3C. What is specific heat of metal?
When the following reaction is balanced in acid solution using the lowest possible whole number coefficients, the coefficient of Cl2(aq) will be: Cl-(aq) + MnO4-(aq) ---> Cl2(aq) + Mn2+(aq)
determine the molecular weight of the venusian atmosphere assuming that it consists of 95 co2 and 5 n2 by volume. what
How many grams of amonnia are needed to react with 50.0 grams of potassium tetrachloroplatinate then calculate how many grams of cisplatin are formed from 50.0gm of potassium tetrachloroplatinate, if percent yield for the reaction is 75%.
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