In an experiment hydrochloric acid reacted with different volumes of sodium thiosulfate in water. A yellow precipitate was formed during the reaction. A cross drawn at the base of each flas became gradually invisible due to the formation of this yellow precipitate. The time taken for the cross to become invisible is recorded. A partial record of the experiment is shown. The de the formation at this yellow precipitate time for the to become recorded the base of Flask Volume of HCI Experimental Record Volume Volume Sodium Thiosulfate Water Time 10 m/ 14 seconds 10 20 mL 40 30 10 10 30 20 m 10 Based on your of factors that affect the rates of chemical the do not have to determine the trend you come you

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.