What are some of the limitations of using stream tables as models for rivers?

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal