Why is DNA polymerase useful in criminal investigations?

Calculate the free energy change for the reaction at 25 °C. Is the reaction spontaneous?

2 Ca(s) + O₂(g) → 2 CaO(s)

Using the concept of the multiplier, explain why mass layoffs by large companies such as Boeing or General Motors are a concern to the citizens and leaders where those firms are located.

Denver Mines paid $625,000 for the right to extract ore from a 250,000-ton mineral deposit. In addition to the purchase price, Denver Mines also paid a $810 filing fee, a $2,000 license fee to the state of Colorado, and $55,390 for a geologic survey of the property. Because the company purchased the rights to the minerals only, it expects the asset to have zero residual value when fully depleted. During the first year of production, Denver Mines removed 48,000 tons of ore, of which it sold 44,000 tons. Make journal entries to record (a) purchase of the mineral rights, (b) payment of fees and other costs, (c) depletion for first-year production, and (d) sales of ore. Round depletion per unit to the closest cent.

Assume the demand for lumber suddenly rises because of a rapid growth of demand for new housing. Assume no change in supply. Why does the equilibrium price of lumber rise? What would happen if the price did not rise under the demand and supply circumstances described?

Tomatoes Describe a strategy to randomly split the 24 tomato plants into the three groups for the chapter’s completely randomized single factor test of OptiGro fertilizer.