Two substances react and the mass is recorded. The mass of the products does not equal the mass of the reactants. Which is the best explanation for the difference in the masses?
A. Some of the mixture spilled.
OB. Gas was produced and lost to the environment.
OC. Substances were added after the initial mass was recorded.
D. The scale was not balanced.

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process