Silver exhibits a cubic crystal structure with a lattice constant (a) value of 0.409 nm. It has an atomic weight of 107.87 g/mol and a density of 10.5 g/cm3. a. What is the crystal structure of silver? b. Determine its atomic radius in nm. Present your answer in three (3) decimal places.

1. Write balanced net ionic equations to explain the observations in the options assigned by your instructor. (All reactions are oxidation-reduction.) See the protocol on page 192. a) Option E Cues b) Option F

Taking into account that the spheres represent atoms, indicate:a) if the represented systems correspond to mixtures or notb) if the substances are simple or compound.c) In what state of aggregation are they?

Masses of compounds used and observations NaCI CuSO4-5H20 Bright blue crystaline solids (NH4)2Fe(SO4)2 pale, Blue-green crystalline solid colorless Crystals Appearance of solid Mass of vial and 12.8364 12.7398 12.9445 compound (g) Mass of emptied vial (g) 11.6023 11.4888 11.9221 Mass of compound used (g) 1.2341. 1.2510. 1.0224 Volume of prepared solution = Type response here. Mass of sodium chloride used = Type response here.

Please answer subparts to question 4. A,B, and C   4. For each substance described below, indicate whether it is a solid, liquid, or gas at room temperature.      4a. A clear substance that takes the shape of its container but does not fill it up completely      4b. A green colored substance with a melting point of 234 °C.      4c. A substance that maintains its shape when you remove it from the box that held it.

8. For each compound, pick the better solvent for dissolving it, water or hexane (C6H14). a. I2 b. NaBr c. Ethanol, CH:CH2OH d. benzene, C6H6

Match the following descriptions in column A to the choices listed in column B: A 1. Stoichiometry 2. Spikes 3. Ferromagnetism 4. Colloid 5. Hole 6. Nanoparticle 7. Empirical formula 8. Unit cell 9. Surfactant 10. Ferrofluid 11. Magnetite 12. Van der Waals forces B a. Weak forces of attraction between molecules b. Regions where unpaired electrons strongly interact with one another & align, even in the absence of a magnetic field c. A pattern of uplifted suspended particles that arise from placing a magnet near ferrofluid d. A chemical term that deals with relative amounts of substances involved in chemical reactions e. A dispersion of particles from ~ 1 nm to 1000nm f. A phenomenon in which the internal magnetic moments of unpaired electrons within the domain of the solid are aligned and act cooperatively g. An empty site in a crystalline solid h. A very small particle on a scale of nanometers (10⁹m) i. The name for Fe3O4 j. Information that gives the simplest ratio between atoms of…

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What volume of ethanol (density = 0.7893 g/cm³) should be added to 450. mL of water in order to have a solution that freezes at -15.0°C? Assume the density of water is 1.0 g/mL. (For water, K₁= 1.86 °C/m.) Select one: O a. 371 mL O b. 470 mL O c. 212 mL O d. 132 mL O e. 167 mL (Please type answer with explanation).

What is the volume of 1.80 M NaCl solution that can be prepared by the dilution of a 50.0 mL of brine solution containing 32.0 wt% NaCl? (Assume the density of a brine solution is 1.10 g/mL and formula mass of NaCl=58.4 g/mol) a. 6.03 mL b. 167 mL C. 301 mL d. 438 mL