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how many grams of sugar are in 15.0% concentrated solution with a total mass 125 g?
In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion.
A balloon filled with helium gas has a volume of 741 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km,where the pressure is 0.5 atm.
The mass ratio of sodium to fluorine in sodium floride is 1.21:1. a sample of sodium fluoride produced 26.5g of sodium upon decomposition how many grams of fluorine was formed.
A solution of ethanol (C2H6O) in water is sometimes used as s disinfectant. 1.00 L of this solution contains 553 g or ethanol and 335 g of water. What is the mole fraction of ethanol in this solution.
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
If 4.50 g of methane gas (CH4) is in a 2.00-L container at 35°C, what is the pressure in the container?
Rate Law for Proposed Mechanism, Consider the reaction 2NO(g) + O2 ---> 2NO2 (g). The following mechanism has been proposed to explain the experimental rate law
C2H4 + 3O2 = 2CO2 + 2H2O if 6.0 mol of co2 are produced, how many moles of o2 were reacted.
Calculate the probability of finding an electron that is described by this wavefunction in a volume of 1.0 pm3 (i) centred on the nucleus.
Calculate the equilibrium constant for each of the reactions at 25 ° C .O 2 (g)+2H 2 O(l)+2Cu(s)→4OH - (aq)+2Cu 2+ (aq) Express your answer using one significant figure.
Determine what would be the final temperature if thirty grams of Al at 95 degrees Celsius are added to 100 grams of H 2 O at 25 degrees Celsius?
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr ( Ksp= 5.0E-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.00L of 0.500M Na2S2O3?
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