Which best describes the law of conservation of mass? 1.The coefficients in front of the chemicals in the reactants should be based on the physical state of the products.

2.Products in the form of gases are not considered a part of the total mass change from reactants to products.

3.When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not.

4.The mass of the reactants and products is equal and is not dependent on the physical state of the substances.

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.