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Problem- We mix 50.00 mL of 0.050 M HNO3 and 25 mL of 0.10 M NaCH3COO. What is the pH of the resulting solution? Ka (CH3COOh)=1.8x10-5
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The molecular weight of ibuprofen was determined by mass spectroscopy to be 206.287 g/mol. What is the molecular formula for ibuprofen?
An Ice cube tray holds 325 grams of water. If the water initially has a temperature of 25 C, how many kilojoules of heat must be removed to cool and freeze the water 0 C?
What is the pressure exerted by 87.2 g of chlorine gas in a 14.0-L vessel at 12.3oC. (R = 0.08206 L atm K-1 mol-1)
when 1.50g of ba is added to 100g of water in a container open tothe atmosphere the reaction shown below occurs and the
The cobalt(II) ion, Co^(2+), is especially responsive to magnetic fields, more so that Co^(1+) and Co^(3+). Why
What is the percent ionization of a 0.186 M solution of this acid? A certain weak base has a Kb of 7.50 × 10-7. What concentration of this base will produce a pH of 10.06?
find the molarity of an unknown NaOH solution if 0.5536 g of the KHP required 37.00 mL of a NaOH solution.
Assume you are assigned two unknowns, Compound A and B. One is a fat and the other is oil. You dissolve a small amount of compound A in cyclohexane. Subsequent to you add 4 drops of a cyclohexane solution containing bromine the reaction mixture re..
Definition for electrophilic, transition state and Markovnik , electrophilic, transition state
A sample of an unknown gas effuses in 14.7 min. an equal volume of h2 in the same apparatus under the same conditions effuses in 2.42 min. what is the molar mass of the unknown gas
hydrobromic acid + Aluminum hydroxide -> water + aluminum bromide was double displacement but i got it wrong. What type of reaction is this?
A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture
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