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Using the lewis structure predict the geometrical structures of the following ions and state the hybridization of the central atom.
ion: N3-
ion: CO3^2-
ion: NO3-
ion: BF4-
in the titration of 63.0 ml of 1.0 m methylamine ch3nh2 kb 4.4 multiplied by 10-4 with 0.50 m hcl calculate the ph
the only swimming pool at the el cheapo motel is outdoors. it is 5m wide and 12 m long. if the weekly evaporation is
The solubility of CO2 gas in water is 0.15g/100mL at a CO2 pressure of 760mmHg. What is the solubility of CO2 in a soft drink (which is mainly water) that was bottled under a CO2 pressure of 4.5atm
The final temperature of the calorimeter is 150°F. What is the mass of titanium used? The specific heat capacity of water is 4.184 J g-1 °C-1.
why is a stemless funnel recommended for filtration of the hot saturated solution? 2. in your buchner funnel, can you use filter paper that is to big for the funnel and curls up around the edges? why?
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water.
The initial concentration of a reactant in the first order is .28M. The rate constant for the reaction is.75s^-1. What is the concentration of the reactant after 1.85s?
A perfume company wants to dispense 19.2 quarts of a new fragrance into small vials. How many 15.0 mL vials can they fill (rounded to the nearest full vial)
1 kg air executes carnot power cycle having efficiency 60. heat transfer to the air during isothermal expansion is 40kj
A 65 kg man is on ice skates. The skates blades have a total contact area of 2.0 cm^2. How much pressure does the man exert on the ice
Calculate the pH and pOH of a solution of HI made by dissolving 3 x 10 ^-5 moles of HI (a strong acid) in 570 mL of water.
The atomic masses of ^10B and ^11B are 10.0129 amu and 11.0093 amu., respectively. calculate the natural abundances of these two isotopes. The average atomic mass of B is 10.811 anu
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