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The pH of the solution is 2.81 after 15.00ml of base is added. Calculate the ionization constant,Ka, of lactic acid.
What is the sum of the simplest whole number ratio coefficients in the balanced chemical equation for complete combustion of C3H8.
A 58.0 mL solution of 0.500 M Cd(NO3)2 is prepared. What mass of NaOH is needed to precipitate the Cd2+ ions from this solution?
Calculate the heat that must be supplied to 12.40 g of Ne(g) at 0.150 atm to raise its temperature from 25.0°C to 51.0°C under the following conditions
How many fluoride atoms are in the tube of toothpaste? How many grams of sodium ion are in 2.10 toothpaste? How many molecules of triclosan are in the tube of toothpaste?
Molecular and ionic equations, What would be the proper balanced molecular and net ionic equations for each of these neutralization reactions?
a student pumped some helium gas into a balloon. when this balloon was connected to an open ended U-tube containing some oil (density=9.18 g cm-3 the oil was displaced 112 mm towards the atmosphere. what is the pressure of the helium inside this b..
Calculate the pH of the resulting solution at each of the specified points in the titration. Initially: pH of HCl
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5.
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
When the electrons return to the ground state, they lose the excess energy in the form of 640 nm photons. What is the energy gap between the ground state and excited state in the laser material? answer is in J i was absent in class and my test is ..
Calculate the probability that a quantum mechanical particle in a one-dimensional box will be found in the left quarter of the box through repeated measurements when it is in the lowest-energy state?
calculate the molar concentration of OH- ions in an 0.85M solution of hypobromite ion, BrO- (Kb = 4.0x10^-6). what is the pH of this solution?
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