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1. Aluminum has a specific heat of 0.880 J/g-deg. How many joules are needed to heat 155g of Al from 20.0oC to 75.0oC2. Characterize each of the following as saturated, unsaturated, or unable to exist. Give reasons for your answers.A. C5H12 B. C3H2 C. C8H20 D. C2H2 E. CH33. The ?H of combustion of C2H6 is 1541 kJ mol. How many kJ of energy result when 575g of C2H6 are combusted?4. Why is it that a solution of NaCl in water conducts electricity, but A solution of sucrose in water does not conduct electricity?5. Why does a 1 molal solution of ZnCl2 in water have a lower freezing temperature than a 1 molal solution of NaCl in water?
Calculate the volume of 0.540 M sodium hydroxide solution contains 11.5 grams of sodium hydroxide?
Find out the Kb of ammonia if the pH of a buffer formed by mixing 50.0 mL of 1.00 M NH 3 and 50.0 mL of 1.00 M ammonium nitrate?
how many cans of Mountain Lightning would an individual have to drink to die from a tartrazine overdose If the LD50 of tartrazine in humans is supposed to be 12,750 mg/kg (as it is for mice) and the average human weighs 70 kilograms,?
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
Determine what is the final volume the gas occupies If the pressure of a gas inside the cylinder changes from 840.0 mmHg to 360.0 mmHg,?
Determine how would you compare the escape velocity of asteroid Y as compare to the escape velocity of asteroid X?
Determine what is element Y if you have a compound consists of element "Y" and H, only and know that it is 79.89% element Y by mass. Each molecule has 3.00 times as many H atoms as Y atoms?
Gas stoichiometry and Percentage of calcium carbonate in the sample
A 1.0-L buffer solution is 0.105M in HNO 2 and 0.145M in NaNO 2. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g NaOH.
What was the initial temperature of the Cu metal If the final temperature of the Cu-H 2 O mixture was at twenty five degree celsius? (The specific heat of copper = 0.377 J/(g°C).)
determine how do you know if there must be a precipitate or not and Show whether or not a precipitate will form if The Ksp of PbI2 =9.8×10-9
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?
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