Solid magnesium plus oxygen gas yields solid magnesium oxide

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

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?

Why does his teacher ask him to balance the equation by including the correct coefficient