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A student found that the mass of an empty specific gravity bottle was 21.431 g. Metal pieces were added to the dry bottle. The specific gravity bottle and the metal pieces together had a mass of 34.899 g. when deionized water was added to the specific gravity bottle containing the metal pieces, the total mass was 43.029 g. The metal pieces were emptied out and the specific gravity bottle filled with deionized water at 20 degrees celcius. The mass of the specific gravity bottle filled with water was 31.408 g. 1. what is the mass of the metal pieces in the specific gravity bottle? 2. what is the mass of the water in the specific gravity bottle when the metal pieces were there? 3.what is the mass of the water in the specific gravity bottle after the metal had been emptied out? 4.what was the mass of the water that was displaced by the metal pieces? 5.What is the volume of the displaced water? 6.What is the volume of the metal pieces? 7.What is the density of the metal pieces?
find the ph of the two equivalence points and the volume (ml) of 0.0414 M KOH needed to reach them in the titration of 17.3 mL of 0.130 M H2co3 (first equivalent point = ML KOH, and pH= )
A given mass of radium is over a million times more radioactive than the same mass of uranium
Calculate the molarity for: A.0.5g CO2 in 652 g of water. B. 56g of NH3 in 500 g of water. C. 3.21 g of NaOH in 3405 ml of water.
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C. How much heat is evolved per gram of fuel burned?
The gas pressure in an aerosol can is 1.8 atm at 25 degrees celsius. if the gas is an ideal gas what pressure would develop in the can if it were heated to 475 degrees celsius?
A sample of an unknown metal has a mass of 35.4 grams and a volume of 3.11 centimeter cube. calculate the density.
the enthalpy of formation of ethanol, C2H5OH, is -277.0 kJ/mol at 298.15k. calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 (g) and H2O.
The latent heat of vaporization of mercury is around 300,000 J/kg. What is the least amount of mercury (in kg) that can be vaporized when 3 million joules are introduced?
Determine the molar mass of the compound if boiling point constant for CCl 4 =4.95 K · kg/mol.?
If 25.6 L of NO2 forms, measured at 35°C and 605 mm Hg, what is the percent yield?
A sample of water vapour at 200 degrees C is compressed isothermally from 350 cm^3 to 120 cm^3. What is the change in its molar Gibbs
A 145 g aluminum cylinder is removed from a liquid nitrogen bath, where it has been cooled to -196° C. The cylinder is immediately placed in an insulated cup containing 226 g of water at 15.0° C,
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