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Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution. found the molarity 2.5592 by dividing the moles by molar mass. How to find molality and mol fraction?
Determine the grams of fat, protein, and carbohydrate in one serving. Determine the number of "food calories" (Cal) per gram of fat, protein, and carbohydrate
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
A certain flexible balloon contains helium gas at 855L. Initially the balloon was at sea level and the temperature was 25 degrees Celsius with 732 torr.
Draw all possible isomers for the molecule having the formula C7H7C1. The molecule contains one benzene ring.
Calculate the molar concentration of uncomplexed Zn2+ in a solution that contains 0.20 mole of Zn(NH3)42+ per liter and 0.0116 M NH3 at equilibrium.
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion,the temperature of the water is 26.55 C.
How many mL of .360M HNO3 are needed to neutralize a 22.5mL sample of .240M KOH.
what volume of 3M sulphuric acid is required to neutralize all of the C 7 H 5 NaO 3 and the excess sodium hydroxide present after the initial reaction? Determine how much H 2 SO 4 was in excess?
consider the reaction CO2+H2=CO+H2O.The equilibrium concentrations are [CO]= 0.050M, [H2]=0.045M, [CO2]=0.086M, and [H2O]= 0.040M. Calculate K .
Consider a piece of gold jewelry that weighs 9.78 g and has a volume of 0.680 cm3. The jewelry contains only gold and silver, which have densities of 19.3 g/cm3 and 10.5 g/cm3, respectively.
Fumaric acid, which occurs in many plants, contains 41.4% C, 3.47% H, and 55.1% O by mass. A 0.5 mol sample of this compound has a mass of 58.0 g.
If, in a certain experiment, over a specific time period, 0.0033 mol PH3 is consumed in a 1.5-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
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