A calorimetry experiment determined that the combustion of 1.01 g of H2(g) reacting with excess O2(g) gave qsoln = 143 kJ. Calculate ΔH for the reaction: H2(g) + ½ O2(g) → H2O (l)

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Which compound contain an iron with a 3+ charge

The number at the end of an isotope’s name is the number.