Who used experiments and scientific tools to study matter?

Only a few elements are dissolved in sea water. True or False

9 Given the balanced equation representing the reaction between methane and oxygen:CH4 + 2O2 → CO2 + 2H2O According to this equation, what is the mole ratio of oxygen to methane?

Calcular la carga de dos particulas igualmente cargadas, que se repelen con una fuerza de 0,1 N, cuando estan separadas por una distancia de 50 cm en el vacio

Which equation represents the total ionic equation for the reaction of HNO3 and NaOH? Upper H superscript plus, plus upper O upper H superscript minus right arrow upper H subscript 2 upper O.

Chlorine Gas has an atomic weight of nearly 71 Atomic Mass Units, it's vapor density is greater than 1. true or false

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for

Atoms of the halogen family typically steal two electrons from other atoms when they react true or false

Looking at the periodic table, which group consists of elements that will not form an acid when combine with hydrogen? A) radon, neon, calcium B) neon, bromine, barium C) beryllium, iodine, krypton D) lithium, potassium, fluorine

Mixtures have (exact, relative) amounts of the same substances