Just answer without taking my points please, pretty annoying to get them. Question 16.
In the waters of dams in agricultural regions, the increase in the concentration of nitrate ions from salts
contained in fertilizers, can lead to the phenomenon of eutrophication. This phenomenon causes the death of fish and
other aquatic organisms, feeding a cycle of degradation of water quality.
a) Explain the relationship between increased concentration of nitrate ions, eutrophication and decreased oxygen
dissolved in water.
b) Explain what is EUTROPHICATION.

What’s the percent by mass of carbon in c10h14n2

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap

Which type of fossil does this image depict?