Calcutlate the heat of reaction for: 2NaHCO3(s)->NaCO3+CO2(g)+2H2O(1)

(b) aluminum AGO = AH° = || hydride: AIH 3(S)→ Al(s) + 3/2 H₂(g) kJ/mol kJ/mol

hydrated CuSO4 is blue in colour. why?

Write a balanced chemical equation for the formation of 1 mol of Cr₂O3(s) from Cr and O2 in their standard states. (Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank. If no reaction occurs, leave all boxes blank and click on Submit.) ✓+3/20₂(g) ✓- →Cr₂O3(s) 2Cr(s) The equation of the formation of Cr₂O3 (s) from the elements: 2 Cr(s) + 3/2 O2(g) → Cr₂O3(s) b What is the enthalpy change if 3.1 g of chromium is oxidized to Cr₂O3(s)? AfH for Cr₂O3 (s) is -1134.7 kJ/mol Enthalpy change = Submit Submit Answer OCT 30 kJ Try Another Version tv ♫ 10 item attempts remaining 5 LIZA O Cengage Learning Cengage Technical Support Correct 144 B MacBook Pro * 23 Ⓡ E Previous Next Email Instructor Save and Exit U

1) Choose the formation reaction for Li2SO4. A) 2 Li(s) + 1/8 S8(s, rhombic) + 2 O2(g) B) 16 Li(s) + S8(s, rhombic) + 16 O2(g) → C) L¡2SO4(aq) D) 8 L¡2SO4(s) E) 2 Li*(aq) + SO4² (aq) LiżSO4(s) 8 LizSO4(s) 2 Li*(aq) + SO,²-(aq) 16 Li(s) + S§(s, rhombic) + 16 O2(g) Lİ2SO4(aq)