Which is the best explanation of his results? The heating changed some of the sample to gas, causing the mass to decrease without breaking down the sample. Therefore, the original sample is a compound. The appearance stayed the same, showing that the sample was not broken down by heating. Therefore, the original substance is an element. The mass decreased during heating and some of the impurities escaped. Therefore, the original substance is an element. The chemical reaction with acid changed, showing that the sample was broken down by heating. Therefore, the original substance is a compound.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

hope this have a good day

cuz he's blad

explanation:

a ratio derived from the equality between two different units that can be used to convert from one unit to the other. information obtained from experiments, sometimes called experimental results. the part of the experiment that is affected by the independent variable.