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Calculate the Calorimeter Constant if 25 g of water at 60C was added to 25 g of water at 25C with a resulting temperature of 35C?
Why does the same amount of liquid when left in a wider and flatter container evaporate quicker than when left in a narrower and deeper container?
how many grams of mercury (II) oxide are needed to create 28.9 grams of oxygen gas?
A piece of copper alloy with a mass of 60.0 g is heated from 21.0 ?C to 44.0?C. In the process, it absorbs 507 J of energy as heat. What is the speci?c heat of this copper alloy.
Nuclear reactions is expressed in given reaction as 2/1H +2 /1H→3/2He + ? ; 233/92U+1/0n→133/51Sb+98/41Nb+?1/0n
The plasma (HCO3-) of an individual living at a high elevation is 18.5 meq/L. If this concentration of bicarbonate fully compensates the decrease
A 93 gram solution of silver nitrate contains 16 grams of AgNO3. What is the percent by mass of silver nitrate in this solution?
Explain the characteristics of a single, double, and triple bonds including why they form
Solubility in water in hexane, when mixed water and ether(diethyl ehter), why two layers will form ? Which layer will be top layer why?
if .350g sample of cinnabar is heated the org decomposes completly to leave .302 of pure mercury metal.what is the empirical formula of cinnabar?
When 0.0172 mol HI is heated to 500 K in a 2 L sealed container, the resulting equilibrium mixture contains 1.9 g of HI. Calculate Kc for the decomposition reaction 2HI(g) *) H2(g) + I2(g) .
.914g sample of stannous flouride gives a 1,078g precipitate of stannous phosphate. calculate the theoretcial yeild?
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
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