H20 NO2+ PO NO3 Crude Sketch Calculations (# of valence electrons, # of bonds, etc. Lewis Structure # electron groups, electron group geometry # of bonded atoms, molecular shane DFocus

21. How many milliliters of 18.2 MH₂SO4 are needed to prepare 600.0 mL of 0.10 MH₂SO4? a. 0.30 mL b. 109 mL c. 3.3 mL d. 1.6 mL e. 4.3 mL

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…

Evaluate the product. (7.61×10^9)(4.46×10^3)