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I need proficient help in the following problems.
Question- The mass spectrum of an organic compound shows the relative abundances of M to be 68.32% and M 1 to be 11.08%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400mL of a solution that has a concentration of Na+ ions of .600M
We add R12 to the tank until the final mass of R12 inside the tank is 80 kg. If the temperature remains constant, what is the volume occupied by the liquid in the final state. How much mass of R12 was added to the tank
Table below lists absorption values of an FT-IR band at 1530 cm^-1 due to bending vibrations of polyethylene in polyethylene/polybutadiene (PE/PBT) blends.
A bubble rises from the bottom of a lake of depth 90.0 m, where the temperature is 3° C. The water temperature at the surface is 18° C. If the bubble's initial diameter is 1.00 mm, what is its diameter when it reaches the surface
Since the freezing point of a solution depends on the number of particles, what would you expect the freezing point of 0.1 m solutions of aqueous NaCL and BaCl2?
a 45.0 g aluminum block initally at 28.0 celsius absorbs 825 joules of heat. what is the final temperature of the
a sample consisting of various gases contains 3.8times10-6 mole fraction of radon. this gas at a total pressure of 34
converting liquid water to solid ice releases 1.44 kcalmol.awhat is the sign of delta h for this process?bhow many
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
A given mass of radium is over a million times more radioactive than the same mass of uranium
on a smoggy day in a certain city the ozone concentration was0.34 ppm by volume. calculate the partialpressure atm of
The molecule AX3, in which A is the central atom, is polar and obeys the octet rule. How many lone pairs of electrons does A have
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