Which of the following statements is true concerning the electrochemical cell depicted below? Zn | Zn2+(aq) || Cu2+(aq) | Cu? Zn2+(aq) + 2e− Zn(s); E° = –2.87 V

Cu2+(aq) + 2e− Cu(s); E° = –2.38 V

a. The cell reaction is spontaneous with a standard cell potential of 0.49 V

b. The cell reaction is nonspontaneous with a standard cell potential of -0.49 V

c. The cell is at equilibrium

d. The cell reaction is spontaneous with a standard cell potential of 5.25 V

e. The cell reaction is nonspontaneous with a standard cell potential of -5.25 V

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.