11. You run 100 m in 25 s. If you then run the same distance in less time, does your aver - age speed increase or decrease? Explain.

If the valence electrons were removed, what would be the ion charge of the element? Al

The order in which atomic orbitals are filled is based on what factor?

How would you indicate 2 water molecules using chemical symbols?

Marking brilliant for answers Which situation represents quickly dissolving a solid solute? Small crystals of solute are dropped into a warm solvent and then stirred. Small crystals of solute are dropped into a cold solvent.

For each example of a phase change, identify whether heat is absorbed from the surroundings or released into the surroundings. A popsicle melts on a hot day. Rubbing alcohol evaporates from the surface of the skin.

The molar mass of CO2 is 44.01 g/mole. Choose which of the following correctly represents this relationship correctly as a conversion factor. 1 mol CO2 = 44.01 g CO2 44.01 mol CO2 = 1 g CO2 44.01 molecules CO2 = 1 g CO2 1 molecule CO2 = 44.01 g CO2

For which blocks of elements are outer electrons the same as valence electrons? For which are d electrons often included among valence electrons?

F the solution described in the introduction is cooled to 0 ∘c, what mass of kno3 should crystallize?

11. You run 100 m in 25 s. If you then run the same distance in less time, does your aver - age speed increase or decrease? Explain.

In a zero order reaction, it takes 342 seconds for 75% of a hypothetical reactant to decompose. Determine the half-life t_{1/2} in units of seconds. Do not enter units with your numerical answer. Numeric Answer: