For each of the following pairs of substances, determine which has the larger molar entropy at 298 k: (a) br2(l) or (b) cl2(g) (c) ni(s) or (d) fe(s) (e) c2h6(g) or (f) c2h4(g) (g) ccl4(g) or (h) ch4(g) (i) hgo(s) or (j) mgo(s) (k) nacl(aq) or (l) mgcl2(aq) enter the six letters in order (e. g. acegik, bdfhjl, etc.)

Afamily is one another name for a group on the table of elements.

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.