2 g (an excess) of iron is added to 50 cm of 0.5 M sulfuric acid. When the reaction is over,
the reaction mixture is filtered. The mass of the
unreacted iron is found to be 0.6 g. (A,: Fe = 56.)
a What mass of iron took part in the reaction?
b How many moles of iron atoms took part?
c How many moles of sulfuric acid reacted?
d Write the equation for the reaction, and deduce
the charge on the iron ion that formed.
e What volume of hydrogen (calculated at rtp)
bubbled off during the reaction?

150.0 grams of asf3 were reacted with 180.0 g of ccl4 to produce ascl3 and ccl2f2. if the actual yield of ccl2f2 was 127 g, what is the percent yield?

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 state of matter is ice a. liquid b. element c. solid d. gas