It was Theodora - wife of deceased EmperorTheophilus, who was regent, while Michael III was still an infant. It put an end to Iconoclasm schism, and since then icon veneration is one of the pillars of Orthodox religion.
Empress Theodora restored the veneration of icons in 843 CE after her husband, Emperor Theophilus, died. This action ended the Iconoclast Controversy and solidified the importance of icons in Orthodox Christianity, leading to the celebration known as the Feast of Orthodoxy. Her leadership marked a significant turning point in Byzantine religious practices.
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Jawaban:Diketahui:- Senyawa non elektrolit:- Massa (m) = 4,2 gram- Volume pelarut (air) = 500 ml = 0,5 L- Larutan CaCl₂ (elektrolit):- Konsentrasi (M) = 0,3 M- Kondisi:- Kedua larutan isotonik (tekanan osmotik sama)- Suhu sama- CaCl₂ terionisasi sempurna menjadi 3 ion (Ca²⁺ dan 2Cl⁻), sehingga faktor van't Hoff (i) = 3 Ditanya:- Massa molekul relatif (Mr) senyawa non elektrolit Dijawab:1. Tekanan Osmotik Larutan CaCl₂:- Rumus tekanan osmotik larutan elektrolit:- π = M * R * T * i- π = tekanan osmotik- M = molaritas- R = konstanta gas ideal- T = suhu (dalam Kelvin)- i = faktor van't Hoff- Karena kita hanya perlu membandingkan tekanan osmotik, kita bisa abaikan R dan T (karena sama):- π CaCl₂ = M * i = 0,3 M * 3 = 0,9- (Kita anggap "0,9" ini sebagai nilai relatif tekanan osmotik)2. Tekanan Osmotik Larutan Non Elektrolit:- Rumus tekanan osmotik larutan non elektrolit:- π = M * R * T- Karena larutan isotonik, tekanan osmotiknya sama dengan CaCl₂:- π non elektrolit = 0,9- M non elektrolit = 0,9 (karena R dan T sama)3. Mencari Molaritas (M) Larutan Non Elektrolit:- Molaritas (M) = mol / volume (L)- mol = massa (g) / Mr- M = (massa / Mr) / volume- 0,9 = (4,2 g / Mr) / 0,5 L- 0,9 * 0,5 = 4,2 / Mr- 0,45 = 4,2 / Mr- Mr = 4,2 / 0,45 = 9,33 Jawaban Akhir:- Massa molekul relatif (Mr) senyawa non elektrolit tersebut adalah sekitar 9,33.