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Calculate the heat needed at 0 degrees Celsius in each of the following and indicate whether heat is absorbed or released: a) joules to freeze 35.2 g of water; b) joules to freeze 275 g of water; c) kilojoules to melt 145 g of ice; d) kilojoules to melt 5.00 kg of ice
At a particular temperature, K 3.75 for the reaction SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.800 M
Equal initial pressures of hydrogen and nitrogen are added to a container at 298K where they react as in question 1. (question 1 is at the end) a. If the equilibrium pressure of hydrogen is 1.5 atm, determine the equilibrium pressures of nitrogen a..
being used as a membrane to purify nitrogen. if the flux of nitrogen through the member is 8.2*10^-7 kg/m^2-s, what is the production rate of nitrogen in g/h?
Briefly describe experiments and expected outcomes to differentiate whether this inhibitor is a competitive inhibitor or a mixed inhibitor.
What is the concentration of the HNO3 solution? Your response differs from the correct answer by more than 10%. Double check your calculations. M (b) How many moles of NaOH were in excess after the first addition?
Suppose that the microwave radiation has a wavelength of 10.8 . How many photons are required to heat 205 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
A 5.00 ml sample of vinegar(d=1.05g/ml and it contains acetic acid) is titrated with 17.70 ml of a 0.200M NaOH solution. What is the molarity, % acetic acid (w/w) and % acetic acid (w/v)?
After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37 C. Calculate the heat capacity of the calorimeter (J/C - joules per degree).
Identify the alkaline Earth metal. Express your answer as a chemical formula. Write the formula for the metal hydride. Express your answer as a chemical formula.
estimate the amount of carbon dioxide (in tonnes) that is consumed over a 6-month period by the forest, assuming trees are 50% glucose and 50% water. How much sunlight (in GJ) has the forest absorbed in that period?
An aqueous solution was prepared to have a density of 1.54 g/mL and a molarity of 19.4 mol/L at 20oC. The molar mass, Mm, of the solute is 40.00 g/mol. What is the mass of the solvent?
calculate the molar solubility of calcium carbonate in 0.050 molar calcium chloride and ksp for calcium chloride is 3.8X10^-9.
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