Three students have made multiple measurements of the solubility of sodium chloride (in gof NaCl per 100 g of water). Their results are summarized in the table below. The correctvalue for the solubility of sodium chloride is 35.9 g. Which student’s measurements are both accurate and precise?

What is the formal charge of this molecule/ion?  

Which of the following bonds is the most polar? A. H⎯Cl B. H⎯S C. H⎯C D. H⎯F E. H⎯O

Determine the number of moles of 0.1488 g of phosphoric acid, H3PO4  

What is the shape of the ClF2– ion as predicted by the VSEPR theory?

Based on their positions in the periodic table, list the following ions in order of increasing radius: K+, Ca2+, Al3+, Si4+.  

What is the total mass (amu) of carbon in each of the following molecule? CH3CO2H (acetic acid)  

Balance the following equations: Note:1 mol of the compound needs to have a number 1 in front of the molecule Na(s) H2O(l) NaOH(aq) H2(g)   Fe(s) H2O(l) Fe3O4(s) H2(g)  

A photon of light produced by a surgical laser has an energy of 3.027 × 10−19 J. (Questions: 15-18) Calculate the wavelength in nanometers of the photon. What is the color of the emitted light?    

Employers do not need to accommodate a person with a mental handicap.