Industrially, nitric acid is produced by the Ostwald process, as represented by the following equations: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(l) 2NO(g) + O2(g) → 2NO2(g) 2NO2(g) + H2O(l) → HNO3(aq) + HNO2(aq) What mass of NH3 (in grams) must be used to produce 1.11 tons of HNO3 by the Ostwald process, assuming an 80.0 percent yield in each step (1 ton = 2000 lb; 1 lb = 453.6 g)? Enter your answer in scientific notation.

Can you guys me with question no. 5!

The first element on the periodic table of elements is carbon. a. true b. false

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.