Compare and contrast substances and mixtures with two examples

Which of the following describes a compound? (Hint: Carbon and oxygen both appear on the periodic table.) OA a piece of pure carbon, containing only carbon atoms B. oxygen gas surrounding a solid piece of carbon c.

Which of the following statements best explains why a city on the windward side of a mountain gets more precipitation than one on the leeward side of the mountain? A. Warm, moist air rises and loses its moisture. B.

What is the basic form of matter which cannot be broken down any further?

What is the pH of a 0.051 M solution of HCl?

Which of these is not a part of the endocrine system? A. Pituitary gland B. Urethra C. Thymus D. Pancreas E. Thyroid

An electron moved from a lower energy level to a higher energy level. What most likely happened during the transition? A random amount of light was released. A fixed amount of energy was absorbed. A fixed amount of energy was released.

Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 57.1 grams of sodium are added to water?

The distance from dalton, ga to Dallas, tx is 1308 km. What is the distance in miles

Which will melt faster: ice made from tap water, distilled water, or salt water?

You know that 8.9 moles of solute particles are dissolved in that liquid solution. If the molarity of the solution is 25 M, how many liters of solution do you have?