What is the molality of 15.4 grams sodium bromide (nabr) dissolved in 125 grams of water

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?

2. how is heavy water different from normal water

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)