46, which of the following relatonships sinoorect? metric d 1 kilogram 10 gram b

Question

46, which of the following relatonships sinoorect? metric d 1 kilogram 10 gram b) 1 megagram 10 gram cl 1 millimeter 10 meter 47. Which set of compounds belowisa erin schal members considered sauble in water? e Naci BaCh NH4NO3 and UCO4 48 Ammonia reacts -en oxygen fon nbogen oide and evapor 4 .502 4 No 5H20 When 40 ograms ofNs and soogramsorozare ao ed react whic is imiting reagent? 49 How many grams of No would be produced in the previous Quesson? a. 468g D. 374 c, 1240g d R00g e, 7059 50 Given the following idormation: Calculate the 4H 10ChPO Pios is) -6PC for b, 610 c -110.5 d .610, 1 51. Four substances are listed below select al that could be classfed as midurec 1) gasoline 2) aluminum fol a, rice pudding and seawater d)pasoine, saawater, and rice pudding b) seawater c)gasoline and seawater t) al are mixtures 52. Which of the folowing is not an endothermic process? a) condensation of water vapor b) vaporization d) melting of a sold e) sublimation of dry ice c) raising the temp of gas

Explanation / Answer

46. Incorrect conversion unit,

c)

47. Soluble set of compounds

c.

48. moles NH3 = 40/17 = 2.35 mol

moles O2 = 5/32 = 1.25

If all of NH3 reacted, we would need = 2.35 x 5/4 = 2.94 mol O2

since O2 available is lower than this value,

limiting reactant is,

d. O2

49. grams of NO formed = 1.25 x 4 x 30/5

b. 37.4 g

50. dH for the reaction by rearranging equations,

b. +610.1 kJ

51. Mixture would be,

d)

52. Not an endothermic process

b. and e.

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