Atoms are smaller than molecules, and they are also the smallest building blocks of matter. Atoms make up molecules when two or more atoms bond.
Answer:
Explanation:
When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.
Answer:
It is a reactant that produces smaller amount of product.
Explanation:
" The limiting reactant is a reactant that control the amount of product in chemical reaction because of its smaller amount"
Consider the example:
2 H₂ + O₂ → 2H₂O
two moles of hydrogen react with one moles of oxygen and produces two moles of water. when we take two mole of hydrogen and two mole of oxygen than again two mole of water is produced because hydrogen is limiting reactant and one mole of oxygen left un reacted.
Identification of limiting reactant:
Calculate the number of moles of reactant.
compare it with number of moles of product with help of balance chemical equation.
identify the reactant which produces less number of moles of product.
I would say it should be Einstein's famous equation of e=mc^2 which means energy =mass x the speed of light squared. With this equation Einstein showed that energy comes from a mass travelling at the speed of light squared which is a fundamental equation to explain physical phenomena.
