Carry out the following conversions using the given balanced chemical equation. Don't forget units and labels in your answers!
NOTE: Subscripts are not available in answers, please see example below.
ESTELLE
Ex. for the label Fe2S3. you enter: Fe253
2Fe +35 Fe2S,
a. How many moles of S are used to react with 0.39 moles of Fe?
ht
b. How many moles of FezSy are produced when 1.27 moles of Fe react?
HE
c. How many moles of S were used if 0.536 moles of FeS3 were produced?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

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?