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Iron pyrite is often called "fool's gold" because it looks like gold (see page 12). Suppose you have a solid that looks like gold, but you believe it to be fool's gold. The sample has a mass of 23.5 g. When the sample is lowered into the water in a graduated cylinder (see Study Question 63), the water level rises from 47.5 mL to 52.2 mL. Is the sample fool's gold (d = 5.00 g/cm3) or "real" gold (d = 19.3 g/cm3)?
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1370 Torr
the solubility of silver sulfate in water is 0.223 wv at 35degc. calculate the solubility product of this salt at this
What is the pressure in the cylinder if the temperature is increased to 45 degrees Celsius and the piston is raised so that the volume occupied by the gas is doubled.
Problem- What is the concentration of solution when 6.190 g of NiSO4 is dissolved to make a total volume of 250mL in a volumetric flask
Determine the procedure to make 250ml of 0.1M H3PO4 from concentrated 85%(by mass) H3PO4.
A metal object with a mass of 19 g is heated to 96 degree celcious, then transferred to a calorimeter containing 75 g of water at 18 degree celcious
The membrane has pores equivalent in size to a spherical molecule with a molecular weight (Mm) of 120,000 daltons. The protein solution consists of albumin (40 g/L at Mm = 69,000 daltons), globulins (70 g/L at MW = 150,000 daltons), and fibrinogen..
How many kilograms of CaCl need to be added to 25L of ice slush to lower the melting point by 5 degrees C? Please show work. kfp=1.86
Assuming the rotation of a diatomic molecule in the j = 10 state may be approximated using classical mechanics, calculate how many revolutions per second 23Na35Cl (g) makes in the J = 10 rotational state. The rotational constant of23Na35Cl (g) is ..
A titanium rod of length 10 cm and circular diameter of 2 cm is pulled in tension with a load of 100000 N. The rod elongates by 0.01 cm under the load but recovers to its original length when the load is released.
A 0.2678g sample of an unknown acid requires 27.21mL of 0.1164 M NaOH for neutralization to a phenolphthalein endpoint. There are 0.35mL of 0.1012 M HCl used for back-titration. What is the molar mass of the unknown acid
Mixture of equal amounts of both enantiomers of given compounds does not rotate the plane of polarized light. (e) Racemic mixture has the same melting point as both corresponding enantiomer.
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