Heavy elements such as aluminum and carbon were formed by which of these phenomena? A. Big bang B. Fusion in very large star C. Fusion in small star D. Supernova

Why will F2 and Ar diffuse at almost the same rate?

To squeeze a gas into a small space

Iron has a mass of 7.87 g per cubic centimeter of volume, and the mass of an iron atom is 9.27 * 10-26 kg.

A student reacts 89g of salicylic acid with 21 ml of acetic anhydride producing 11.3g of acetyl salicylic acid. what is the percent yield of the reaction?

Four solutes are added to a solvent. All solutes have the same mass and solubility. The surface areas of four solutes are 2 mm2, 4 mm2, 6 mm2, and 10 mm2. Which solute will dissolve the quickest? 2 mm2 4 mm2 6 mm2 10 mm2

Which is the smallest particle into which a compound can be broken down and still remain the same compound? A. atom B. mixture C. element D. molecule

A double replacement reaction is a reaction in which one element replaces a similar element within a compound True or false

Why would gamma radiation be used in diagnostic imaging rather than alpha or beta radiation?

1.) Rust forms when Fe, O₂, and H₂O react in the balanced equation below; 2Fe (s) + O₂ (g) + 2H₂O (l) - -> 2Fe (OH) ₂ (s) In an experiment 10.0g of Fe is allowed to react with 4.00g of O₂ A.) Which of these reactants is the limiting reagent? B.

Choose the answer that takes place when a liquid absorbs heat energy without increasing its temperature. A.) the pressure increases B.) it vaporizes C.) it solidifies D.) the volume decreases