The heat capacity at constant pressure of hydrogen cyanide is given by the expression C p [ J / ( mol ⋅ ° C ) ] = 35.3 + 0.0291 T ( ° C ) Cp[J/(mol·°C)]=35.3+0.0291T(°C) Write an expression for the heat capacity at constant volume for HCN, assuming ideal-gas behavior. Calculate Δ ˆ H ΔHˆ(J/mol) for the constant-pressure process HCN ( v , 25 ° C , 0.80 atm ) → HCN ( v , 200 ° C , 0.80 atm ) HCN(v,25°C,0.80atm)→HCN(v,200°C,0.8 0atm) Calculate Δ ˆ U ΔUˆ(J/mol) for the constant-volume process HCN ( v , 25 ° C , 50 m 3 / kmol ) → HCN ( v , 200 ° C , 50 m 3 / kmol ) HCN(v,25°C,50m3/kmol)→HCN(v,200°C,5 0m3/kmol) If the process of Part (b) were carried out in such a way that the initial and final pressures were each 0.80 atm but the pressure varied during the heating, the value of Δ ˆ H ΔHˆ would still be what you calculated assuming a constant pressure. Why is this so?

Actual ingredients of lab (the cookies i am actually making) 1/2 cup sugar 1/2 cup brown sugar 1 1/3 stick margarine 1 egg 1/2 tsp salt 1 tsp vanilla 1/2 tsp baking soda 1 1/2 cup flour 1 1/3 cup chocolate chip can you answer the questions below ? discussion 1. suppose you are given the following amounts of ingredients: 1 dozen eggs 24 tsp. of vanilla 1 lb. (82 tsp.) of salt 1 lb. (84 tsp.) of baking soda 3 cups of chocolate chips 5 lb. (11 cups) of sugar 2 lb. (4 cups) of brown sugar 1 lb. (4 sticks) of margarine a. for each ingredient, calculate how many cookies could be prepared if all of that ingredient were consumed. (for example, the recipe shows that using 1 egg- with the right amounts of the other ingredients- yields 24 cookies. how many cookies can you make if the recipe is increased proportionately for 12 eggs? ) b. to determine the limiting reactant for the new ingredients list, identify which ingredient will result in the fewest number of cookies. c. what is the maximum number of cookies that can be produced from the new amounts of ingredients?

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane