30.0 mL of pure water at 282 K is mixed with 50.0 mL of pure water at 359 K. What is the final temperature of the mixture

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Which statement best describes what happens when molecular compounds melt