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How many grams of hydrochloric acid are in 500.0 mL of a 5.000 M solution? 1. 36.50 g 2. 54.75 g 3. 73.01 g 4. 91.25 g
calculate the energy needed to raise the temperature of 180.0g of water from 10.0 C to 40.0 C. The molar heat capacity for water is 75.3 J/k*mol
A cylindrical glass tube 15.0 cm in liength is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g.
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
Calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees celsius. (water in j/g degree celsius = 4.184, cal/ g degree celsius = 1)
If CO2 is not removed by boiling after the addition of HCL, how will this affect the determination of moles of base per gram of antacid tablet?
Mole fraction of MgCl2 in an aqueous solution prepared by dissolving .400 moles of MgCl2 in 850g of water
The molar heat capacity of is described by the following equation over the range 300
Compute the molar mass of the noble gas krypton(Kr) in a natural sample, which is 2.2% 80 Kr (molar mass 79.91 g/mol),
Propose a structure for C4H9N, which does not liberate a gas when treated with NaNO2 and HCL, and has IR absorptions at 917, 990, and 1640, as well as an N-H absorption at 3300. The 13C NMR spectrum is as follows
an adult person radiates heat to the surroundings at about the same time as a 100-watt lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hrs?
What is the partial pressure of H2O in the compressed gas mixture? (See this table.) torr (b) What mass of water vapor condenses to liquid g
Identify each of the following molecules as polar or nonpolar: a) H2S; b) PBr3; c) SiCl4; d) SO2.
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