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A solution with a weak acid was tested with the indicators in this experiment. The colors observed were as follows:
- methyl violet: violet
-thymol blue: orange
-methyl yellow:red
-congo red: blue
- bromcresol green: yellow
what is the approximate pH of the solution?
What is the concentration of a solution of lithium carbonate containing 0.01 mol in 750 mL of solution? Give your answer to two significant figures and include the units as mol L-1 ie 0.36 mol L-1
If 5.78 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 = CO2 + H2O how much oxygen is required?
A voltaic cell consists of a Hg/Hg2^2+ electrode(E degrees=0.85V) and a Sn/Sn^2+ electrode(E degrees=-0.14V). Calculate[Sn^2+]if [Hg2^2+]=0.36 M and Ecell=1.04V at 25 degrees C.
a certain first-order reaction has a rate constant of 1.00times10-2 at 45 . how many minutes does it take for the
A titration is performed on 1.3245g of a sample of a diprotic acid that is dissolved in 50 ml of water. if 44.10 ml of .6124 M NaOH is required to reach the end-point, what is the molecular weight of the diprotic acid
3.00 moles of Helium gas at 25.0 degrees C and 744 mmHg will occupy what volume A)67.2L B)75.0L C)22.4 L D)6.16 L E)6.03 L
Descrbie observable differences between elemental copper and Cu2+ ion and between H2
Silver chloride, often used in silver plating, contains 75.27% Ag.Calculate the mass of silver chloride in grams required to make 6.0 g of silver plating.
a reaction having time independent stoichiometry follows the equation a2b 2z . suppose the initially there 0.28 mol of
the concentrations in this system were found to be [N2]=[O2]=0.100 M and [NO]=0.500 M. N2(g)+O2(g)2NO(g) If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established?
What is the specific heat capacity of silver? Using the specific heat capacity find the heat energy for 235 g Ag with a change in temperature of 32.1 degree C.
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
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