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If 0.487 grams of AgNO3 is dissolved in 20 ml of water, how many moles of silver ions will be present in each millimeter?
how many meters away is a cliff if an echo is heard one half second away? assume that sound ws traveled at 343 m/s on that day.
during one of the processes at the plant. The two liquids are blended until a specific gravity of 1.445. Determine the mole percentage of the two components in the blend.
which of the following solutes is likely to be most soluble in water
In the reaction 4 P4 + 5 S8 -> 4 P4S10 600 g of P4 is mixed with 1300 g of S8.
(the freezing point constant is 1.86 C/m). On the basis of these data, one can conclude that the nonelectrolyte has a molecular weight of?
Stellar nuclear fusion begins with 1H and ends with 56Fe. Younger stars fuse hydrogen to form 4He, while older, more massive stars fuse helium to form heavier elements.
in the synthesis of divanillin the first step in the mechanism of this reaction involving vanillin is the formation of phenoxy radical by abstraction of the phenoic H atom
A substance has a molar extinction coefficient of 2.4x104cm-1M-1 and an absorbance of 0.10 What is the concentration of this substance in a cuvette with a 1.0 cm path length.
A 2.89-L flask is filled with propane gas (C3H8), at 1.00 atm and -23.0°C. What is the mass of the propane in the flask?
Oleum or fuming sulfuric acid availble commerically in concentrations ranging from 20 to 99% sulfur trioxide. 1. What is the percentage by mass of sulfer trioxide (SO3)
How much heat (in kJ ) is required to warm 12.0 grams of ice, initially at -12.0 Celsius, to steam at 112.0 Celsius? The heat capacity of ice is 2.09 J/g*Celsius and that of steam is 2.01 J/g*Celsius?
A hydrogen-filled balloon was ignited and 2.00 gram of hyrdogen reacted with 16.0 g of oxygen. How many grams of water vapor were formed?
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