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Is the mass of a product obtained from commercial samples for all time less than the theoretical mass, which is derived by calculations? Validate your opinions with appropriate reasons.
What is the pH of a buffer that consists of 0.45 M CH3COOH and 0.35 M CH3COONa? Ka = 1.8 × 10-5
The Occupational Safety and Health Administration has set the limit on the maximum percentage of carbon dioxide (CO2) in air a worker can breathe at 0.500% by mole
Give the expected ground-state electron configurations for atoms with the following atomic numbers. Z=55
Write the rate expression for the reaction C) Calculate k for the reaction D) When [S2O8 2-] = 0.105 M and [I-] = 0.0875 M, what is the rate of the reaction at the temperature of the experiment?
why is it important to immediately cover the Mg ribbon with the other slab of dry ice once it starts burning?
A 100.0 mL aqueous sodium chloride solution is 13.6% NaCl by mass and has a density of 1.12 g/mL. What mass of solute would you add to make the boiling point of the solution 104*C
consider the distribution of ideal gas molecules among three bulbs a b and c of equal volume. for each of the following
For which elements (main group or transition) do the numbers of electrons in the outer or valence, shell correspond to the group number
Diamond and graphite are two crystalline forms of carbon. In which form are the bonds between the C atoms arranged at tetrahedral angles to each other? 1. diamond 2. Neither of these 3. graphite
In a particular redox reaction BrO^- is oxidized to BrO3^- and Ag^+ is reduced to Ag. Complete and balance the equation for this reaction in acidic solution.
Predict the electron-domain geometry, the molecular geometry, and the hybridization of the central atom. For each non ionic species, state whether it will be polar or nonpolar. a) SeO2 b) XeF4 c) PCL5 d) BrF2-
if 25.00mL of .2500 M formic acid is titrated with 25.00mL of .2500 M NaOH, what is the pH at the equivalence point? the Ka for formic acid 1.8x10^-4.
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