Lactic acid, c3h6o3, is a monoprotic acid that is available in solid form. determine the concentration of an unknown solution of sodium hydroxide, in moles per litre, given that it takes 18.34 ml to neutralize a solution containing 0.821 g of lactic acid. write a balanced chemical equation for the reaction .

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa