At the start of the coal combustion experiment, the combined mass of the coal and oxygen reactants was 100 grams. At the end of the coal combustion experiment, the mass of the sample was 100 grams. Why does the scale showing the mass at the end of the reaction give a mass of 100 grams, when there is only a small amount of solid particles remaining on the scale? A. Additional oxygen was created during the combustion reaction.
B. Additional coal was created during the combustion reaction.
C. The mass of the coal particles remaining at the end of the experiment was 100 grams.
D. The mass of the carbon dioxide gas and other byproducts at the end of the experiment was 100 grams.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

clouds form

solid ice forms on leaves.

water droplets form on grass.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'