@X@user.full_name@X@ @GMU: Using bond energies from the table, estimate ΔH for the reaction below. The product has a fluorine atom bound to each carbon.CH2=CH2(g) + F2(g) → CH2FCH2F(g) Bond Energies, kJ/mol Single Bonds   H C N O S F Cl Br I H 432                 C 411 346               N 386 305 167             O 459 358 201 142           S 363 272 — — 286         F 565 485 283 190 284 155       Cl 428 327 313 218 255 249 240     Br 362 285 243 201 217 249 216 190   I 295 213 — 201 — 278 208 175 149   Multiple Bonds C=C 602 C=N 615 C=O 799 CºC 835 CºN 887 CºO 1072 N=N 418 N=O 607 S=O (in SO2) 532 NºN 942 O2 494 S=O (in SO3) 469

A saturated gas sample of 1.0 L was measured at 28 ̊C (PH2O = 28 mmHg) and 750 mmHg. Find the new saturated gas volume corrected to 37 ̊C and 760 mmHg.

@X@user.full_name@X@ @GMU: The density of a particular gas is 5.7721 g/L at 801.07 mm Hg and 19.01 °C. Which gas is it?

@X@user.full_name@X@ @GMU: What is the balanced reaction for the following galvanic cell?Cr(s)| Cr3+(aq) || Cu2+(aq) | Cu(s)

A nurse is teaching a patient about nutrition while taking spironolactone. Which patient statement indicates the teaching was effective?

Which term does not apply to solid worms, platyhelminthes?

All drugs have side effects.

Suicidal thoughts are the most serious of the symptoms of depression.

During the Middle Ages, shamans performed exorcisms to get rid of evil spirits.

@X@user.full_name@X@ @GMU: A compound contains only beryllium and astatine. A sample weighing 116 g of this compound contained 2.44 g of beryllium. How many grams of astatine would there be in another sample of this compound containing 8.01 g of beryllium?