When a chemical reaction occurs, matter isthe amount of each atom is the reactants will be different form the amount in the. Are used to show how many of each molecule in present, andare used to show how many of eachis present.

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Modern weaponry has increased the number of deaths in wars and violent conflicts.