7. For the balanced equation shown below, what would be the limiting reagent if 61.0 grams of Na
were reacted with 26.9 grams of H 20? Atomic Mass=Na-23.0 H-1.00 - 16.0
2Na + 2H 20 --> 2NaOH + H2
A. Na
B. H 20
C. NaOH
D. Ha
HELPPP!!

Numbers with a end value of 4 or lower are rounded up, while with an end value of 5 or higher are rounded down. true or false?

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What is the molar mass of a gas that has density of 2.054 g/l