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Which of the following pairs of substances are miscible and which are not?
a.) CH3CH2OH and H2Ob.) C6H6 and C6H12c.) C6H6 and H2Od.) LiBr and H2O
A sealed balloon is filled with 2.20 L helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 190. torr and the temperature is -35°C
What is the molarity of a solution of 12.0 g of NH4Br in enough H2O to make 240 mL of solution?Answer in units of M.
How many grams of NaOH and H2O are required to prepare 100 g of a 28.7% NaOH by weight solution?
Calculate the bicarbonate and carbonate alkalinities, in mg/L as CaCO3 , of a water having a total alkalinity of 233.0mg/L as CaCO3 and a ph of 10.47?
magnesium hydroxide is 54.87 oxygen by mass.How many grams of oxygen are in 175 g of the compound?How many moles of oxygen is in this.
The mass of a cube of iron is 284 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
A gas occupies 4.04 L at 860 torr and 10C. What volume will it fill if the pressure is changed to 731 torr and the temperature is raised to 43C
Write down a net ionic equation for any reaction that forms a precipitate and discover the anions that make gas upon adding of hydrochloric acid
How much energy is needed to raise the temperature of 16.0g of gold by 17.0degrees C, Answer in units of J
A soft drink contains 44 mg of sodium in 325 g of {rm H_2O}. What is the concentration of sodium in the soft drink in mass percent?
What is the total vapor pressure 4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult's law holds for each component of the solution.
How can one decompose superabsorbent polymers? That is how can one make the dry crystals smaller?
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