A block of aluminum occupies a volume of 15.0 cm and weighs 40.5 g. What is its density?

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

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