The correct answer would be D: Physical properties can be observed without changing the identity of a substance
Watershed....water....river.....streams....oceans....contaminate....nitrogen....phosphorous....subsidence...Thats the order...please give brainliest......
<span>The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?
</span><span>C) Yes, because the number of moles is not dependent on the mass or the volume.</span>
