In what order did mendeleev arrange the elements in the periodic table

What are three organisms that need oxygen?

A standard cell potential of which value describes a spontaneous redox reaction?

Give the number of significant figures indicated 78

Why does salt dissolve faster than baking soda in water?

Which of the following is/are postulates of Dalton's atomic theory? 1. Atoms combine in fixed ratios of whole numbers. 2. Atoms of each element have different properties. 3. Elements occur as solids, liquids, or gases. Group of answer choices

Which statement describes a physical change? a. A carton of milk souring b. A piece of silver flatware tarnishing c. Dry ice subliming into carbon dioxide d. Two clear solutions forming a precipitate when mixed

What are two types of local winds?

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using

An element which forms an oxide that dissolves in water to form an acidic solution.

Milk of magnesia is a base. What happens when you drink milk of magnesia for an upset stomach? A) It raises the pH of your stomach. Eliminate B) It lowers the pH of your stomach. C) It cleanses the stomach of harmful, painful bacteria.