H4(g) +  ______O2(g) ⟶   ______   CO2(g)+  ______H2O(g) What are the coefficients for O2(g) an

Water can undergo a decomposition reaction, as shown in the following balanced equation.  2H2O(g) → 2H2(g) + O2(g) How many grams of oxygen gas O2 will be formed by the decomposition of 72.0 g of water vapor (H2O)? Show all work. (5 marks)   (1) balance equation, list Givens, and Molar mass (M)                                                  2 H2O(g)  →   2 H2(g) + O2(g)                                                                m =          72.0 g                             _______  = m                                                      M =        _______                            _______ = M                                   n =         _______                            _______ = n   (2) convert mass of given (m) to amount of given (n)     ***Use molar mass (M) (3) convert the amount of given (n) to the amount of required.  ***Use mole ratios (4) convert the amount of required substance to required mass ***Use molar mass (M)

In the "Méthode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is C,H12Os (aq) + 2C, H;OH(aq) + 2002(9) Fermentation of 893 ml grape juice (density is 1.0 g/cm') is allowed to take place in a bottle with a total volume of 971 mL until 15% by volume is ethanol (C,H; OH). Assuming that CO2 obeys Henry's law, calculate the partial pressure of CO, in the gas phase and the solubility of CO, in the wine at 25°C. The Henry's law constant for CO, is 3.1 x 10-2 mol/L atm at 25°C with Henry's law in the form C = kP, where C is the concentration of the gas in mol/L. (The density of ethanol is 0.79 g/cm.) (Enter your answers to two significant figures.) Partial pressure atm Solubility

Anna was asked to identify and explain if the equation CO2 (1)-CO2 (g) was an endothermic or exothermic reaction. However she got it wrong. What is her error and what should the answer have been? Anna's statement : The equation is an endothermic reaction because the energy is released from gaseous CO2 to the surroundings to become liquid CO2 causing the molecules to slow down. earch a inse # % & 3 4 7 8 9 E R Y P D G H J L V BN M alt