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A 32.22g sample of a metal that looks like aluminum is heated to 99.8*C in hot water. The metal is then quickly transferred into exactly 50.0ml of water at 22.9*C in a calorimeter; assume no cooling of the metal during transfer. When thermal equilibrium is attained, the temperature of wate-plus-metal has risen to 28.8*C
What is the specific heat of this metal?
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
the temperature unknown. When the volume changes to 1.68L the temperature is found to be -220oC. What was the initial temperature in C?
a 1L flask contained 2g N2, 0.4g H2 and 9g O2 at 27c. what is the total pressure in the flask?
Calculate the molality of total ions in an acqeous solution prepared by dissolving 0.400 moles of magnesium chloride in 850.0 g of water?
To obtain the same antifreeze protection requires 76g of propylene glycol to replace each 62g of ethylene glycol. Calculate the mass of propylene glycol required to replace 7.00gal of ethylene glycol. The density of ethylene glycol is 1.12 .
Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced?
The acceptable limit for mercury in drinking water is 2ppb. Does this correspoond to mercury in its elemental form (Hg) or in its ionic form (Hg^2)
Calculate the mass in grams for a sample of Al that absorbs 1.70kJ when the temperature increases from 56 degree Celsius to 177 degree Celsius?
If there are initially 7.21 grams of the compound dissolved in 110.0 mL of water, how many grams will remain in the aqueous layer after extraction with one 30.0 mL portion of ether?
When a 0.528 g sample of a compound containing only carbon, hydrogen, and oxygen is burned, 0.306 g of water and 0.815 g of carbon dioxide are formed. What is the empirical formula for this compound?
What is the mass of water in 1m^3 in air having a termperature of 32C and relative humidity
Compute the moment of inertia of the molecule in kg m 2 . And also determine the greatest wavelength of the radiation that can excite the molecule into rotation.
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