(with photo ) three experiments are performed under identical conditions to measure the initial rate of the reaction described by the equation 2n2o5(g) -> 4no2(g) + o2(g). the results of the three experiments, in which only the n2o5 concentration is varied, are as follows:

Compare and contrast physical changes with chemical changes.

In in , is to a 28.4-g (1-oz)−23.0 °c to −1.0 °c?

In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.