Identify the spectator ions in the following complete ionic equation. 2 k + (aq)+ s 2− (aq)+ pb 2+ (aq)+2 no − 3 (aq)→pbs(s)+2 k + (aq)+2 no − 3 (aq) express your answers as ions separated by a comma.

The modern periodic table has groups.

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g

Growing crops in places where major pests don't live using beneficial insects to eat harmful insects using a rat trap instead of a rodenticide developing drought-resistant tomato plants using beneficial insects or natural oils to repel pests planting a different crop every year to fake out the pests keeping food covered to deter ants and rodents developing bean plants with a resistance to fungus picking caterpillars off tomato plants cultivation practice biological control cultural control genetic resistance natural chemicals