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What mass of LP gas is necessary to heat 1.4 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 14% of the heat emitted by the LP gas combustion goes to heat the water. The rest is lost as heat to the surroundings.
A new soft-drink on the market is prominently labeled as "caffeine-free". Based on the nature of complaints filed by several consumers, it appears that the "caffeine-free" claim might actually be fraudulent.
calculate the specific heat of a metallic element if 478 J of energy are needed to raise the temp. of a 82.73 g sample from 25.0 C to 50.0 C. what is the most likely identity of the element
a mass of 47.5 g of h2os at 273 k is dropped into 225 g of h2ol at 298 k in an insulated container at1 bar of pressure.
adrenaline is the hormone that triggers release of extra glucose molecules in times of emergency or stress. a solution
Calculate the values of E for the cell when the following volumes of the ce4+ titrant hav been added:(Activity coefficients may be ignored as they tend to cancel when calculating concentration ratios). 1.50 ml 20.0 ml 39.0 ml 40.0 ml 44.0 ml 80.0 ..
A list of compiled anhydrous masses for Na2CO3, CaSO4, and MgSO4 and I have to find the molar ratio of these anhydrous masses. The compiled list is from every section of chemistry, Different masses for different dates for each of the anhydrates
the atomic weight of a newly discovered el- ement is 98.225 amu. it has two naturally occuring isotopes. one isotope
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?
If 0.20mL of methyl benzoate and 0.45mL of concentrated (18M)sulfuric acid PLUS 0.15mL of concentrated (18M)sulfuric acid and 0.15mL concentrated (16M)nitric acid were added together and the end product was methyl-3-nitrobenzoate what is the theor..
A 1.800 g sample of octane, C8H18, was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents increased from 20.01°C to 29.99°C. What is the heat of combustion per gram of octane?
what are the expected impurities in acetophenetidin synthesis?
What is the total concentration of ions in the solution obtained by mixing 0.50 L of 0.10M solution of barium chloride with 0.50 L of 0.20 M solution of sulfuric acid.
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