If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.11 which of the following is true.
- [HCHO2] < [NaCHO2]
- [HCHO2] = [NaCHO2]
- [HCHO2] << [NaCHO2]
- [HCHO2] > [NaCHO2]
-it is not possible to make a buffer of this pH from HCHO2 and NaCHO2

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.