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The RDA for vitamin B12 is 2.4ug for males and females. If a drink provided 6.85*10^5pg per 10oz serving, what is the volume of the drink (in mL) required to meet the RDA? (show all calculations including units)
At what temperature will 6.21 g of oxygen gas exert a pressure of 5.00 atm in a 10.0-L container
Write the overall cell reaction of each. Identify the anode and cathode of each. Arrange the three metals in order of decreasing ease of oxidation(most easily oxidized metal first
Heat Capacity explained in this answer, Given the following heat capacity data for 2-propanol, determine the amount of heat required to heat 500 mL of 2-propanol from 0 C to it's boiling point.
Calculate the reaction Zn(s) + 2HCl(aq) ! ZnCl2(aq) + H2(g) What mass of ZnCl2 (MW = 136.3 g/mol) can be prepared from the reaction of 3.27 grams of zinc (MW = 65.38 g/mol) with 3.00 grams HCl (MW = 36.46)?
Ammonia and hydrogen chloride gases react to form solid ammonium chloride. A 10.0 L reaction flask contains ammonia at 0.450 atm and 22°C, and 164 mL of hydrogen chloride gas at 7.50 atm and 271 K is introduced
The mass spectrum of an organic compound shows the relative abundances of M to be 36.44% and M 1 to be 8.277%. Assuming the peaks are caused by 12C and 13C isotopes
A meteorological balloon of radius 1.0M at sea level and 20 degrees C. At it's maximum altitude the radius of the balloon is 3.0M and the temperature is -20 degrees C
Two students weighed a 125-ml beaker that had a mass of 80.562g on a calibrated top-loading balance. Each student used their own top-loading balance, recorded three mass readings for the beaker
A dose of aspirin is 5.0mg/kg body weight has been prescribed to infant that weighs 8.5lbs. How many miligrams is needed.
A gas sample has an original volume of 760 ml when collected at 720 mm and 25degC. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 30degC?
If a system consists of two subsystems, one with 5 microstates and one with 10 microstates, how many microstates are in the whole system?
A gas has a volume of 50.0 cm3 at a temperature of -73 C. What volume would the gas occupy at a temperature of -123 C if the pressure stays constant?
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