When balancing a chemical equation can you adjust the number that is subscripted to a substance formula?

Why don't noble gases bond?

Which correctly describes the laws of conservation? A. Mass is not conserved in a chemical reaction. B. Energy is not conserved in a nuclear reaction. C. Mass is conserved in a nuclear reaction. D. Energy is not conserved in a chemical reaction.

Which of the following would have the best thermal insulation properties? A. A paper cup B. a plastic cup C. a thick mug D. a cup made of metal

What element are diamonds composed of

Write the Lewis structure and molecular formula for each of the following hydrocarbons: (a) hexane (b) 3-methylpentane (c) cis-3-hexene (d) 4-methyl-1-pentene (e) 3-hexyne (f) 4-methyl-2-pentyne

True or false: the hydrogen atom is most stable when it has a full octet of electrons.

Is it illegal for fracking companies to let water that has been used for fracking deep back into the ground?

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. Sweat b. Carbon dioxide c. Aluminum d. Vegetable soup

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

For 2H2 + O2 → 2H2O: 4 moles of H2 will react with moles of O2 to produce moles of H2O