What is ph?
a. the negative logarithm of the hydroxide ion concentration
b. the positive logarithm of the hydroxide ion concentration
c. the negative logarithm of the hydrogen ion concentration
d. the positive logarithm of the hydrogen ion concentration

For the following, determine the type of reaction and then give products.

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

Can someone me with 3 and 4 plz. this is for masteries test.