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What is the molarity of C12H22O11 in an aqueous solution that is prepared by dissolving a 28.07 g sample of impure C12H22O11 in water to make 1,175 mL of solution. Assume that the sample is 93% C12H22O11 by mass.
Enter your answer in mol/L, accurate to three significant figures. Do not include units as part of your answer.
Explain what is the wavelength of these radio transmissions in meters (m). Once you have the value, take its log base 10 as well as enter your answer with three decimal places.
Calculate the mass/mass percent concentration for each of the following solutions. 1.) 1.05g NaCl in 95.0g of solution 2.) 2.00g K2Cr2O7 in 103.0g of solution 3.) 50.0g C6H12O6 in 125.0g of solution
How much of this rock (in kg ) must be processed to obtain 5.5 metric tons of lead? (A metric ton is 1000 kg.) Express your answer using two significant figures.
p-Dichloobenzene (PDCB) is replacing naphthalene as the active ingredient in mothballs. Calculate the value of K sub f for camphor if a 0.289 m solution of PDCB in camphor decreases the freezing point pf camphor by 11 degrees celsius.
There are three isomeric dichlorocyclopropanes. Their 1H NMR spectra show one signal for isomer 1, two signals for isomer 2, and three signals for isomer
At a certain temperature, the pH of a neutral solution is 7.72. What is the value of Kw at that temperature
calculate the seperation in Energy between the ground state and the first excited state in which one electron occupies the state with n=7.
Find the temperature at which Kp=41.0 for the reaction H2(g)+I2(g) 2HI(g). [Given: at 25 degrees C, for H2(g), deltaH degrees F=0, S degrees=131.0 J/mol*K; for I2(g)
Calculate the heat of a reaction if 12.5 g CaCl is dissolved in 105 g of water and the temperature decreases from 22 degrees C to 15 degrees C. Assume the specific heat of the solution is 4.184 J/g degrees C. Is the reaction endothermic or exother..
Sulfamic acid is a primary standard that can be used to standardize NaOH. What is the molarity of a sodium hydroxide solution
A certain metal crystallizes in a body-centered cubic arrangement. If it rearranges to a face-centered cubic structure, what will happen to the density of the metal
A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 161 J of heat from the surroundings. Calculate the change in energy of the gas.
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