• ## When is a reaction with a positive enthalpy spontaneous?

Related Questions Online Tutors To Help You Online Tutors To Help You Online Tutors To Help You Online Tutors To Help You Posted in Chemistry A student designs an experiment to test substances X, Y, and Z, to determine which one is a catalyst for the reaction: A + B ® C. Only one of

• ## Which shows the correct relationship? A.) Eo cell > 0 = nonspontaneous reaction B.) Eo cell > 0 = spontaneous reaction C.) Eo cell = 0 = nonspontaneous reaction D.) Eo cell Answer: B.) > 0 = spontaneous reactionExplanation:The standard emf of a cell is related to Gibbs free energy by following relation: = gibbs free energyn= no of electrons gained or lostF= faraday’s constant = standard emfwhen = +ve, reaction is non spontaneous= -ve, reaction is spontaneous= 0, reaction is in equilibriumThus reaction is spontaneous when = +veThus reaction is non spontaneous when = -veThus reaction is in equilibrium when = 0.

Answer : The mass of produced will be, 6.16 grams. Explanation : Given, Mass of = 14 g Mass of = 56.70 g Molar mass of = 100 g/mole Molar mass of = 36.5 g/mole Molar mass of = 44 g/mole First we have to calculate the moles of and . Now we have to

• ## Enzymes affect the reactions in living cells by changing the Select one: a. products of the reaction. b. speed of the reaction. c. temperature of the reaction. d. pH of the reaction

Enzymes affect the reactions in living cells by changing the Select one: a. products of the reaction. b. speed of the reaction. c. temperature of the reaction. d. pH of the reaction

• ## Find the equilibrium concentrations of A, B, and C for a=1, b=1, and c=2. Assume that the initial concentrations of A and B are each 1.0 M and that no product is present at the beginning of the reaction. Consider the following reaction and associated equilibrium constant: aA(g)+bB(g)⇌cC(g), Kc = 4.0

These are 3 questions and 3 answers. Question 1. Answer: I = 0.01 A Explanation: a) Data: i) Type of circuit: series ii) R₁ = 100 Ω ii) R₂ = 100 Ω iii) V = 2 V iv) I = ? b) Formulas i) Equivalent resistance, R = R₁ + R₂ ii) Ohm’s law, V

• ## For the reaction shown, calculate how many grams of each product form when the following amounts of reactant completely react to form products. Assume that there is more than enough of the other reactant. 2Al(s)+Fe2O3(s)→Al2O3(s)+2Fe(l) 4.3 gAl

The value of m is and the value of b is . Further Explanation: The property is a unique feature of the substance that differentiates it from the other substances. It is classified into two types: 1. Intensive properties: These are the properties that depend on the nature of the substance. These don’t depend on

• ## Given the reactant side of the total ionic equation for the neutralization reaction of sodium hydroxide (NaOH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the product species, separated by the reaction arrow. Na+(aq)+OH−(aq)+H+(aq)+Cl−(aq)→ ? Be sure to include the charges on the ionic species and the physical state of all the reactant and product species. Express your answer as a chemical equation.

The equation that shows  acts as the acid is Further Explanation: Acids and bases can be defined in many ways based on different theories, which are as follows: 1. Arrhenius theory: According to this theory, acid is defined as the one which produces hydrogen or hydronium ions in a solution, while the base is defined

• ## WILL UPVOTE! Question 6 (Multiple Choice) Lately, you have been working on improving your skills. You are quite fast and respond quickly to things that happen around you. However, you have some trouble moving around between objects comfortably. Which of the following skills should you improve? A) Speed B) Reaction C) Agility D) Power

ANSWER 1) Option B) they prepare for contact with it EXPLANATION: A golfer prepares for contact after he has addressed the ball. A player addressing the ball means that he has just grounded his club immediately in front of or behind the ball irrespective of the fact that he has taken stance or not. ANSWER