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A cook wants to heat 1.37 of water from 27.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 of heat per gram. (For the sake of simplicity, assume that the transfer of heat is 100 efficient.)
When 9 mL of a solution containing 2.5 M AlBr3 is diluted to 30 mL, a dilute solution is formed. What is the Br- concentration in 15 mL of the dilute solution?
Draw the accepted mechanism for each reaction and illustrate how each stereoisomer is formed in the reaction.
calculate the specific heat capacity of zinc given that a 65.5g sample loses 2008J of heat when cooled from 100.0 degrees celcius to 21.1 degrees celcius.
Calculate the solubility of Ba(IO3)2 in 0.033 M solution of Mg(IO3)2 considering both the electolyte and common ion effects. Ba(IO3)2 Ksp
The design calls for reheating the liquid after the temperature has dropped to seventy degree Celsius the determine about how many stags and how many heaters are required for this process?
The density of hydrogen gas in a flask is 0.147 g/L at 305 K. what is the pressure inside the flask? Calculate the density in G/L of CH4(g) at 75 Celsius and 2.1 atm (R= .08206 L*atm/mol*K).
Verify the following statements (a) One part per million corresponds to one minute in two years, or a single penny in $10,000.
A solution of 53.6 g of glycerin in 133.7g of ethanol has a vapor pressure of 113 torr at 313K. Calculate the vapor pressure of pure ethanol assuming that glycerin is a non-volatile, non electrolyte solute in ethanol.
Octane has a density of 0.692 g/mL at 20°C. How many grams of O2 are required to burn 1.00 gal of C8H18?
Radioactive isotopes often occur together in mixtures. Suppose a 190 sample contains , with a half-life of 12 days, and , with a half-life of 4.5 days. If there are initially twice as many calcium atoms as there are barium atoms, what will be the ..
A gas filled balloon with a volume of 12.5 L at 0.90 atm and 294 K is allowed to rise to the stratosphere where the temperature is 268 K and the pressure is 1.0 millibar. What is the final volume of the balloon ? (1.0 atm = 1.013 bar).
The molarity (moles/L = M) of a solution of 4.0 g NaOH in a total volume of 100.0 mL (or 40 g in 1.0 L) is what?
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