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Calculate pH of buffer solution with 0.1M each of CH3COOH & CH3COONa. What will be the change in pH on addition of the following: ? (pKa = 1.8×10−5). The total volume of solution is 1L.
pH: 4.76
Write the number 0.006078 in the correct scientific notation
6.078x10-3
Balance the following reaction:
__RbNO3+__BeF2 —> __Be(NO3)2+__RbF
2, 1, 1, 2
How much energy is required to heat 140 grams of water from 10 C to 320 K?
21,585.256 J
What is the ideal agar for the cultivation of fastidious organisms such as Neisseria Gonorrhoeae?
Chocolate agar;)
What is the formula for sulfate?
SO4-2
Convert 105 F to Kelvin (Show steps in the board)
313.705 K
What is LEO GER?
What is OIL RIG?
Loss of Electrons is Oxidized, Gain of Electrons Reduced
Oxidation is Loss (of electrons), Reduction is Gain (of electrons)
Which of the following atomic radius is the smallest?
C, C+1, C-1, C+2, C-2, C-4, C+4C+4
What are our names?
Leslie Estrella Carillo Gonzalez
Jose Osvaldo Saucedo Salas
What is the molar mass for H2O?
18 grams/mole
Correct IUPAC name for H2O
Dihydrogen monoxide
What is the reducing agent of the following equation?
2Al+Fe2O3 —-> Al2O3+2Fe
Aluminum is the reducing agent
What is the mole percentage of Xe in XeF4?
20%
What is the name of your professor for lecture?
Dr. Del Castillo
What is bigger O or Fr?
Oxygen
Correct formula for Strontium phosphate
Sr3(PO4)2
Which element weights 102 amu and has 57 neutrons?
Rh
Convert 55 liters/hour to megaliters/picosecond
1.52x10-20
How old is the program PLTL?
24 years old:0
You want to prepare a solution of AgCl of 0.75M. You already have a solution of 5L of 4.00M. How many liters do you need to reach the desire solution?
Nothing, because AgCl is insoluble:)
Give the electronic configuration for the ion Al+3 (yes, the whole thing)
1s22s22p6
What does isoelectric mean?
Give two isoelectric ions for Ne
Ions that have the same electronic configuration as other element, usually noble gases.
F-1, O-2, C-4, Na+1, Mg+2, etc.
What is the mass percentage of O in acetic acid?
53.33%
How many lightbulbs do I have in my house?
67