Suppose a pair of chemical compounds A and B can react in two different ways: A+B → C Reaction 1 gives product C. A+B D Reaction 2 gives product D. The following facts are known about the two reactions: . Reaction 1 is endothermic and Reaction 2 is exothermic. • If a reaction vessel is charged ("filled") with A and B, then at first D is produced faster than C. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For exam if one energy is less than another, that fact should be clear in your sketch.

How much energy is required to decompose 765 g of PCl3, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and may be useful. 4 PC13(g) → P4(s) + 6 Cl2(g) 2.31 x 10³ kJ 4.33 x 103 kJ 6.72 x 10³ kJ 1.68 x 103 kJ 5.95 x 103 kJ AH°, rxn = +1207 kJ

Convert an energy of 526 cal to units of joules. F05830 Convert an energy of 225 cal to units of joules. Convert an en 145 1-T rayo

Both animals and plants rely on stored energy for survivalAnimals can store energy in the form of sugars from the consumption of other matter. Plants the other hand, utilize photosynthesis to produce sugar (glucose). Following storage, the sugars can then be used to provide energy for various functions within the organism. This is referred to as the burning of sugar shown in the chemical reaction below: C 6 H 12 O 6 (s)+O 2 (g) CO 2 (g)+H 2 O(g) 3. Complete the following questions based on the reaction above representing burning sugar: . Balance the chemical equation representing sugar burning (reaction above). b. What type of reaction(s) is/are being represented by the chemical reaction in part (a) ? . How would you prepare 40.00 of 0.250 M sugar solution (C 6 H 12 O 6 ) from a stock solution that is 1.25 M C 6 H 12 O 6 (aq)? ? Provide your answer in terms of of sugar stock solution and explain how you would dilute to the total volume. (HintHow many of sugar stock solution and how…