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how many moles of NaCl are there in 40.0 mL of 1.00 M NaCl solution. If a 50.L container with gas at 2.00 atm is compressed to 15.0 L what is the pressuree of the gas
A reaction between methane and hydrogen sulfide to produce carbon disulfide and hydrogen gas was carried out. CH4 (g) + 2 H2S(g) → CS2 (g) + 4 H2 (g)
What mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60% yield. Please show work and correct sig figs.
Two solutions, "A" and "B", are labeled "0.21 M CaCl2" and "0.34 M CaCl2", respectively. Both solutions contain the same number of moles of CaCl2. If solution A has a volume of 25 mL, what is the volume of solution B
a total alkalinity of 0.003 equivalents/Liter (the former determined by use of a PH meter, and the latter determined by titration with standardized acid to a methyl orange endpoint). Calculate [CO2]
Calculate the wavelength of the photon emitted when an electron makes a transition
A 100.0 g sample of aluminum released 1680 calories when cooled from 100.0C to 20.0C. What is the specific heat of the metal
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
Number of exhaled molecules, Total mass of the atmosphere is equivalent to that in a layer 7 kilometer deep with density equal to the density at the surface
A student wants to make a pH 4.0 buffer solution. She decides to use a buffer made from formic acid and sodium formate (NaCOOH).
A piece of silver of mass 362 g has a heat capacity of 85.7 J/C (celsius degrees). What is the specific heat of silver?
find the molecular weight of a gaseous compound if the density is 12.24 g/L, the pressure is 900 torr, and the temperature is 47 degrees celcius.
How many kJ of energy are required to convert 747 grams of water (liquid) at 23.4°C to steam at 100°C? The following information is given for H2O:
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