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In an experiment, an old metal coin initially at 330.0 C was removed from the oven and quickly placed into 85 gram of water inside a styrofoam coffee cup. The initial temperature of the water was 25.4 C and the final temperature of both the water and metal was 36.6 C. If the specific heat "c" for the metal is 0.916 J/g xC and the specific heat of water is 4.184 J/gC, what was the mass of the coin?
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
If 175 g of X reacts completely with diboron trioxide to produce 2.43 mol of B4X3, what is the identity of X?
How many grams of oxygen gas are required to produce 7.68 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
Calculate the change in enthalpy and entropy of 50 g of liquid water starting at 10 degrees Celsius and completely evaporating into H2O gas at 100 C.
Calculate the final temperature of the solution has a specific heat capacity =4.18 J/°C · g. assuming no heat lost
At equilibrium, the flask containing the reacting mixture Ni(s) + 4 CO(g) --> Ni(CO)4(g) contains 232 torr CO, 1240 torr Ni(CO)4, and 1.82 g Ni at 510°C. What are the Kc and KP for this reaction
A nitric acid solution containing 71.0% HN)3 (by mass) has a density of 1.42 g/mL. How many moles of HNO3 are present in 1.00L of this solution?
Three sparingly soluble salts, MA, MA2, and MA3, all have Ksp = 1.5 x 10-7. Determine which of these three has the highest molar solubility in water? a) MA, b) MA2, c) MA3 ,d) They are all equally insoluble.
Calculate the molecular weight of the compound? Given that Kf=1.86 and the compound in not ionic.
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
At 10 degrees, Kc = 56.3 for the reaction below. H2 + Cl2 --> HCl
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