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A typical cup of tea is made by starting with six fluid ounces of cold water (177 mL). How much heat (in joules) is required to heat this amount of water from 15.3 oC to 87.8 oC, a good temperature for brewing geen tea?
Calculate the mass/volume percent of a NaCl solution in which 160 grams of NaCl is dissolved in enough water to give a total volume of 4.71 L.
What is the freezing point of a 0.19m solution of glucose, C6H12O6, in water? Kf for water is 1.858 C/m
how do i prepare 50 mL of the 0.00625 M HCl solution by an appropriate dilution of the 0.0125 M HCl solution
what is the mass in grams of A) 6.21 mol of KBr B) 10.2 mmol of PbO C) 4.92 mol of MgSO4 d) 12.8 mmol of Fe(NH4)2(SO)4 6H2)
The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
What minimum voltage is required to electrolyze anhydrous HF? Hint: the H-F bond is so polar that liquid HF is essentially composed of H+ and F- ions.
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide if 2.90 g of the gas is collected when 10.5 g of marble reacts
What mass of water is necessary to prepare each of the following solutions? 1.) 200.0g of 1.30\% saline solution 2.) 80.00g of 15.0\% sugar solution
a certain first-order reaction has a rate constant of 1.00times10-2 at 45 . how many minutes does it take for the
Calculate the initial rate for the formation of C at 25 degrees C , if [A]=0.50M and [B]=0.075M for reaction A+2B
A gas occupies a volume of 410 mL at 27oC and 740 mm Hg pressure. Calculate the volume the gas would occupy at STP.
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