An industrial chemist studying bleaching and sterilizing prepares a hypochlorite buffer using 0.500 M HClO and 0.500 M NaClO. (Ka for HClO = 2.9 × 10−8)

Find the pH of 1.00 L of the solution after 0.045 mol of NaOH has been added

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

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

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?