What is the atomic mass of hafnium if, out of every 100 atoms, 5% have a mass of 176, 19% have a mass of 177.0, 27% have a mass of 178.0, 14% have a mass of 179.0, and 35% have a mass of 180.0?

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.