At 25°C, hydrogen iodide breaks down very slowly to hydrogen and iodine: rate = k[Hlf The rate constant at 25°C is 2.4X 10-21 L/mol-s. If 0.0100 mol of HI(g) is placed in a 1.0-L container, how long will it take for the con­centration of HI to reach 0.00900 mol/L (10.0% reacted)?

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

Light waves can move through , but they travel fastest when they move through a(n) .