Question

Phosphoric acid (H3PO4) plus calcium hydroxide react forming calcium phospate (PO4) and water.

Answer 1

Explanation:

An aqueous phosphoric acid solution reacts with an aqueous calcium hydroxide solution to produce water and solid calcium phosphate

Answer 2

Explanation:

In the afternoon of 24 December 1818, Franz Xaver Gruber from the Upper Austrian Innviertel region composed the melody of “Silent Night” at his meagre teacher’s residence in Arnsdorf. His friend Joseph Mohr — assistant priest from the neighbouring Oberndorf — had given him the original poem, asking him to add a melody to it. That same evening, the two men performed the song for the first time after the Christmas mass. Mohr accompanied the song with the guitar. Although Franz Xaver Gruber got to experience the early days of the song’s success, find and on ur own