Which of the following means “spiny skin?”

@X@user.full_name@X@ @GMU: Kaolinite, a clay mineral with the formula Al4Si4O10(OH)8, is produced naturally by the chemical weathering of aluminum silicate minerals like feldspar (granite). Kaolinite is used industrially as filler in slick-paper for magazines and as a raw material for ceramics. How many grams of oxygen are present in 15.38 g of kaolinite?

Body Temperature and Pressure Saturated (BTPS) means

@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.