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Determine the three categories for the NFPA rating system and explain the numerical scale that is used for each rating.
If the half-life of P-32is 14.3 days, how old is the sample? A sample originally contained 50 μCi (microcuries) of P-32. Today it contains only 15 μCi.
Discuss the major organic product acquired from the reaction of cis-2-butene with cold, dilute KMnO4? Determine the major organic product obtained from the reaction of cis-2-butene with warm, concentr
What must be the temperature inside the balloon envelope for the balloon to become airborne if the outside air has a temperature of 15o C, Assume the normal atmospheric pressure of 1.00 atm.
How much product is made per day? How much water is evaporated per day? An evaporator concentrates a weak NaOH solution from 3% to 18%, and processes 2 tons of solution per day.
To measure flow in a natural gas pipeline, pure ammonia gas is injected into a pipeline at a constant rate of 72.3 kg/min for 12min. Determine the numbers of kg of natural gas are flowing through th
What qualitative combination of temperature and the pressure maximizes SO3 yield and how does adding of O2 affects Q and K ? The oxidation of SO2 to SO3 is an important industrial reaction because i
Determine the work for the compression of CO2 gas from3.0 to 1.5 liters against a pressure of 2.0 atm at constant temperature.
Discuss the density of this mixture at 22°C and 758 mmHg if a sample of a breathing mixture for divers contained 34.3%helium, He; 51.7% nitrogen, N2; and 14.0% oxygen,O2 (by mass).
The reaction is given below where a 24.6-mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing191 mL of CO2 that is collected at 24.0
Calculate the specific heat capacity of mercury if it needs 167 J to change the temperature of 15.0 g mercury from 25.0 C to33.0 C? Identify the formula, what each number represents according o for
At 75.0 C a 150.0 g sample of metal is added to 150.0 g of H2Oat 15.0 C. The temperature of the water rises to 18.3 C. Assuming no heat is lost to the surroundings or the calorimeter, find out the
Determine the value at molar heat capacity at constant volume? Calculate the change in molar enthalpy? The molar heat capacity at constant pressure of carbon dioxide is 29.14 J/Kmol.
A 1.207 g sample burns in a calorimeter (heat capacity of calorimeter alone = 1365 J/°C) that contains exactly 1.200 kg of water. High-purity benzoic acid, C6H5COOH;ΔHcomb = -3227 kJ/
Determine the formal charge of the central iodine atom in the Lewis Structure of the iodide ion, IO3- that satisfies the octet rule?
Determine the numbers of moles of methane must be burned to give 1.00 therm of energy? Suppose the water forms as a gas. The "therm" is a unit of energy consumption and is defined as100,000 Btu.
Discuss how much does the chemical potential of water super cooled to -5.0°C exceed that of ice at that temperature?
Use the results in Chapter 3 to simplify each of the corresponding partial derivatives with respect to P at constant H. Write down U, S, V and T as functions of H and P.
By what factor will the kinetic energy change if the speed of themotor cycle is decreased to 25mph? Calculate the kinetic energy in joules of a 950-lb motorcycle moving at 50mph?
100.0 gram of mercuric oxide= 92.61 grams of mercury +7.39 grams of oxygen to determine the mass of mercury oxide that would be required to form 100.0g of mercury metal.
Determine the difference of its molar Gibbs energy from that of a perfect gas in the same state. The fugacity coefficient of a certain gas at 200 K and 50 bar is 0.72.
If the wavelength of microwaves in the oven is 9.75 cm, how long does it take, and determine the numbers of photons must be absorbed, to make the water boil? A certain microwave oven delivers 671 wa
Determine the numbers of collisions per second does an N2 molecule make at an altitude of 20 km? When we are studying the photochemical processes that occur in the upper atmosphere, we require
45.5 mL of 0.0505 M NaOH is needed to titrate the HCl remaining in this 25.00-mL portion. What was the original mass of CaCO3 in the piece of chalk?
A compressed liquid mixture of 42 mol percent n-hexane (1) and58 mol percent ethane (2) is to be fed to a flash tank where the pressure is reduced and a liquid and vapor stream separated.