What does the law of conservation of mass state?
a. mass can be destroyed but not created during a chemical reaction.
b. mass can be created and destroyed during a chemical reaction
c. mass cannot be created nor destroyed in a chemical reaction.
d. mass can be created but not destroyed in a chemical reaction.

What is the overall order of reaction for rate = k[no2]2 ? second order 3/2 order third order zero order none of the listed answers are correct

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.