The formula of water is H2O. Which of the following is indicated by this formula? Explain your answer. a. the mass of hydrogen is twice that of oxygen in each molecule. b. there are two hydrogen atoms and one oxygen atom per water molecule. c. the mass of oxygen is twice that of hydrogen in each molecule. d. there are two oxygen atoms and one hydrogen atom per water molecule.
In this experiment student became more familiar with the use of the spectrophotometric analysis and gravimetric analysis. The purpose of the experiment is conformed of four main ideas; for the student to use analytical methods to determine the P2O5 percentage in the fertilizer. To provide suggestions on how this methods could have been used for a better analysis based on results and calculations from the experiment. To analyze the quantity of phosphorus in a given sample, and to use a modified technique for the analysis of the fertilizer. In this experiment the spectrophotometric analysis will be used to measure the intensity of a colored compound (PO4 3- ) and the gravimetric analysis will be used to measure the weight of Phosphate as a precipitated insoluble compound. We will analyze