You want to survey student opinions at UMN Crookston. You divide the population into “Freshman,” “Sophomore,” “Junior,” and “Senior,” and then randomly select 50 students from *each* group. This is:

According to Shneiderman’s Eight Golden Rules, “Designing dialogs to yield closure” is important because:

In the Power/Interest Grid, how should you manage a stakeholder who has High Power but Low Interest (e.g., a regulatory body or a busy senior executive)?

Describe a specific scenario involving a “Smart Microwave” where a user experiences a Gulf of Evaluation. Explain why this gulf occurred based on Norman’s model and propose one specific design fix using the principle of Feedback.

From the Periodic Table, what is the symbol of the element in group 2, period 4?

Oxidation is the                                      , and Reduction is the                                     .

When aqueous solutions of potassium chloride and magnesium nitrate are mixed together which of the following would be observed?

(3 points) Calculate the volume occupied by 35.15 g of methane gas (CH4) at 32.8°C and a pressure of 655 mmHg.

(SLO #2) A hydrate is a chemical compound that contains small amounts of water that are chemically bound to the crystal. These compounds are typically ionic salts, and the water bound to them is referred to as the water of hydration. The water molecules can be easily removed by heating the hydrate. This produces a dry (anhydrous) form of the ionic compound. For example, copper(II) chloride dihydrate (CuCl2 ∙ 2H2O) is converted to anhydrous copper(II) chloride (CuCl2) if heated to about 110°C: CuCl2 ∙ 2H2O (s) → CuCl2 (s) + 2H2O (g)   A student was given a sample of copper(II) chloride dihydrate. She weighed the sample in a dry covered porcelain crucible and obtained a mass of 25.47 g for the crucible, cover, and hydrated sample. The mass of the empty crucible and cover had been found earlier to be 23.78 g. She then heated the crucible to drive off the water of hydration, keeping the crucible at red heat for at least 15 minutes with the cover slightly ajar. On cooling, she found the mass of the crucible, cover, and its anhydrous contents to be 25.11 g. The following table does not need to be filled in (table not graded), but is here to help you organize your thoughts similar to our lab:   Mass of the crucible and cover   Mass of the crucible, cover, and hydrate   Mass of the crucible, cover, and anhydrous salt   Mass of the solid hydrate   Mass of the anhydrous salt   Mass of H2O lost after heating     From the information given, what is the mass of water in the hydrate?

Which of the following chemical formulas is incorrect?: