Which of the following best illustrates the law of conservation of mass?
A. 3 AgNO3 + 2 Cu → Cu(NO3)2 + 2 Ag
B. 2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
C. AgNO3 + 2 Cu → 2 Cu(NO3)2 + 2 Ag

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24