1. Check all the equipment that apply in preparing serial and molar dilutions only - test tubes
- mohr pipette
- graduate cylinder
- stirring rod
- stock solutions in volumetric flask
- beaker
- scoopula
- balance
- volumetric pipette

2. What is the order of making a stock solution as you did making 0.1 M of NaCl (Part A) in the lab?
1. Measure grams of NaCl needed to make the 0.1 M solution at a certain volume. Place it in the 100 mL volumetric flask, using a wash bottle to clean remaining solid.
2. Cap and Invert the flask and add water up to the mark on the 100 mL volumetric flask
3. Add water about 1/2 full and swirl to dissolve solid as well as add the food coloring.
4. Transfer solution to a plastic bottle to save solution. Cap the bottle to prevent contamination.

Figure 10-1 study figure 10-1. the strong nuclear force felt by a single proton in a large nucleus

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.

In a copper wire, a temperature increase is the result of which of the following