Potassium chlorate on heating decomposes as follows: 2KClO3(s) → 2KCl(s) + 3O2(g)

Assuming 100% yield, calculate the mass of oxygen formed when 3.28 g of potassium chlorate is heated.

Select one:
A. 0.856 g
B. 2.57 g
C. 1.93 g
D. 1.28 g

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.