One liter of a phosphate buffer, 0.100 m. ph 7, is required. a) how would this buffer prepared if the reagents available are sodium dihydrogen phosphate (nah2po4 x h2o) and disodium hydrogen phosphate (na2hpo4) present as solids? distilled water is also available. b) how would this buffer be prepared if the reagents available are phosphoric acid (h3po4) and 1.5 m naoh? concentrated phosphoric acid is 15 m. distilled water is also available.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

no statements shown

the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl