PLEASE HELP ASAP Calculate the pH of a mixture of 50.0 cm^3 of 0.100 mol dm^–3
aqueous ammonia and 50.0 cm^3 of 0.0500 mol dm^–3 hydrochloric acid solution. Kb = 1.78 x 10^-5.

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.