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87.3mL of HCl gas is collected over water a temperature of 21 degrees Celsius and 104.2kPa, what is the dry pressure of this gas?
What is the net ionic equation of the reaction of ZnC2 with NaOH?
What is the pH of a buffer prepared by adding 0.708mol of the weak acid HA to 0.609mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10?7.
Problem- The label on a bottle of concentrated sulfuric acid states the specific gravity is 1.84 and the assay is 96%. What is the normality of the acid
A lead-acid battery uses a redox reaction in which lead(0) and lead(IV) are both converted to lead(II). This reaction is facilitated by the presence of sulfuric acid, H2SO4, as shown by the reaction Pb + PbO2 + 2H2SO4 ---> 2PbSO4 + 2H2O
Problem- Calculate the pH of the solution made by adding .10 mol each of hydroxylamine and HCl to 500 ml of water Hydroxyl amine is NH2OH
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution.
For the reaction NH4CL(aq)=NH3(g)+HCL(aq),delta g=58.8 kJ and delta h=86.4 kJ. Is this reaction favored. If so, how. What would be the entropy change for the reaction of 2.04 moles of NH4CL(aq) at 349K and 1 atm
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
Explain polonium crystallizes in a simple cubic lattice the Po atoms are at the lattice points only. Explain if the density of the metal is 9.31 g/cm3 define what is the unit cell edge length in pm
Calculate the de Broglie wavelength for each of the following. a) a proton with a velocity 95% of the speed of light. b) a 160 g ball with a velocity of 10. m/s
what mass of ccl2f2 must evaporate in order to freeze 115 g of water initially at 21 c? the heat of fusion of water is
Vinyl chloride (H2CH=CHCl), the starting material from which PVC polymer is made, has a Henry's law constant of 0.091 mol/(L.atm) at25 C. Explain what is the solubility of vinyl chloride in water (in M) at25 C as well as a partial pressure of 0.75..
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