Doc Inmaking does a titration using sodium hydroxide (NaOH) and sulfuric acid (H2SO4). He pipets 20.00 mL of H2SO4 solution into the Erlenmeyer flask and adds two drops of phenolphthalein. He does the titration using 0.5000 M NaOH. The initial buret reading is 0.70 mL and the final buret reading is 35.23 mL. Write the balanced chemical equation for sodium hydroxide reacting with sulfuric acid to produce sodium sulfate and water. Determine the mole ratio between the acid and the base. (Hint: it is not one-to-one.) Then calculate the molarity of the sulfuric acid (H2SO4) solution. Enter the H2SO4 concentration with 4 significant digits and units of mol/L.

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5