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naturally occurring gallium consists of two isotopes one of these isotopes is 71Ga with an isotopic mass of 70.9247050 amu and an abundanceof 39.892%. what is the mass number of the other isotope.
the structure they gave me already has two nonbonding electrons on Bromine with no formal charge
In milk at 37 C, lactobacillus acidophilus has a generation time (doubling time) of about 75 minutes. Calculate the population relative to the initial value at 30,60,90 and 150 minutes
If the standard heat of rxn for the rxn is calculated to be -567.4 kJ/g mol FeS2(s) what is the value of Delta Hrxn will you use per kg of FeS2 burned in an energy balance
Many gaseous reactions occur in a car engine and exhaust system. One of the reactions is NO2(g)+CO(g)-->NO(g)+CO2(g). Given the following information determine the overall rate order. Rate=K[NO2]^m [CO]^n
A mercury nanometer contains 2 g of Ar. A burner heats it to P-ext. at 760 torr. What is the Temperature of the gas in the bulb when the total volume is 3 L and H=76mm?
At the end of the process, the pressure is 2.50x10 to the 6 Pa. Calculate the final temperature of the gas. Calculate q, w, deltaU, and deltaH for this process.
Suppose you did the bromination of cholesterol using bromine in DMSO(dimethyl sulfoxide)/H2O mixture (instead of acetic acid). What product(s) would you get?
A mixture of 2.0 mol of H2 (g) and 1.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 25 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
2.0 mL ethanol with 1.0 mL ethylene glycol (HOCH2CH2OH) calculate the theoretical vapor pressure at room temperature for the solution above. using raoults law
What mass of carbon reacts completely with 17.8 grams of SiO2 according to the following equation? SiO2 (s) + 2C (s) → SiC (s) + 2CO (g)
Determine the theoretical and percent yield of your product. In the IR spectrum of phenacetin which peaks are due to the following vibrations: (list the wavenumbers)
Calculate the vapor pressure of a solution prepared by dissolving 0.75 mol of safrole in 950 g of ethanol (46.07 g/mol)
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