You have 1 m3 of wood and 1 m3 of aluminum. Which is heavier? Prove your answer with calculation. (Hint: density = mass/ volume)

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false