Question

2. Calculate y, and report the result with the correct number of significant figures and the absolute error: y-251(+-1) x 860(+-2) / 1.673(+-0.006)

Its question #2 i typed it out you do not need the picture

The question is to Calculate Y, and report the result with the correct number of significant figures and the absolute error: y=251(+-1) x 860(+-2) / 1.673(+-0.006)

3 sig figs

(10 points) Calculate the pH of a solution that is 0.04 M in NH, and 0.05 M in NHCI he Ka for NH4 is 5.70 x 1010 (10 pts) Calculate y, and report the result with the correct number of significant ures and the absolute error: y"251(H) x 860( 2)" 1.673(0.006) (15 pts) Calculate the solubility of Caf Gie, the Ca?" concentration) in a 0.10 M 03 solution. The Ksp for CaF2 is 3.9 x 101. (include activity effects) (15 pts) Calculate the pH of a 0.0300 M Na)HPO, solution (neglect activity effects) e acidity constants for phosphoric acid are Ka -7.11 x 10", Kaj 6.32 x 10 and 4.5 x 10 (10 pts) Write down the correct alpha equation needed to determine the fraction of the al generic diprotic acid H2A in a solution that is in the A form. (20 pts) Write the abbreviated notation and calculate the initial potential of the lowing cell given that [Zn2+]- 0.140 M and [Co2+1-0.090 M (neglecting activity ects): Zn2+ + 2e Zn(s) E%, 0.763 V Co2+ + 2e → Co(s) Eo=-0.277 V 0.0 (10 points) What is the pH of a 0.1 M NaySO, solution? For sulfurous acid (H So.) Ka,-1.39 x 10° and Ka2-6.73 x 10". (10 points) Sketch the alpha diagram for H,PO (10 pts) Calculate y, and report the result with the correct number of significant ures and the absolute error: y-251(H) x 860(+2)" 1.673(+0.006) (15

Answer 1

@n。(2 ): (em dewond) nNAC2 c = 1.673 +0.006 1283. 11.65 C- 86。1.673 SI A215