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Question: Calcium fluoride dissociates in water per the equation shown below. in a pure solution of CaF2, what would the fluoride concentration be (in moles/L) when the calcium concentration is 0.25 moles/L.
CaF2 Ca2+ + 2F-
Suppose you made up a solution in which you dissolved 4.5 g of glucose (C6H12O6) into a total volume of 200mL. What is the % w/v concentration
How many mL of 0.6M acetic acid and 0.9 molal acetic acid need to be added together to make 70ml vinegar (5% acetic acid). Assume 1g/ml density of all solutions.
The X-ray radiation falls in the wavelength region of 1.00E-11 to 1.00E-8 meters. Explain what is the energy of X-ray radiation that has a wavelength of 1.00E-11 m
when 25.0ml of .500m h2so4 is added to 25.0ml of 1.00m koh in a coffee cup calorimeter at 23.50 degree celcius the
The heat capacity of solid and liquid ethanol are 0.97 J g-1 K-1, respectively. How much heat is required to convert 50.0 g of ethanol at -150 deg. celsius to the vapor phase at 78 deg. celsius
What was the experimentally determined specific heat of lead. You may assume that the heat absorbed by the calorimeter was negligible.
Calculate the osmotic pressure of a solution containing 19.10 of hemoglobin in 17.0 of solution at 19. The molar mass of hemoglobin is 6.5*10^4 g/ml
calculate and compare the gravitational and electrical forces between an electron and a proton separated by 1.4 x 10-10 m. The mass of the proton is 1.6726 x 10 -27 kg and that of the electron is 9.1094 x 10-31 kg. The charge of the proton and ele..
Given the balanced equation 2 O3(g) --> 3 O2(g) , determine the rate of reaction with respect to [O2]. If the rate of formation of O2 is 6.94*10^-1 M/s, what is the rate of reaction of O3
Calculate the missing value in each problem. a. delta G=?; delta H=-217 kJ/mol; delta S=151 J/mol*K; T=451 K b. delta G= -20.4 kJ/mol; delta H= 107 kJ/mol; delta S= 211 J/mol*K; T
If a gas held at constant pressure had an initial volume of 5.00 L and the temperature changed from 35°C to 578 K what would be the final volume of this gas?
Based on coulombic attractions, list the magnitude of attraction between ions from the least to highest. why? Nacl, Na2SO4, MgSO4
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