What are four indications that a chemical reaction bay be taking place

Which of the following measurements is expressed to three significant figures? a. 7077 mg b. 0.080 km c. 5.60 mm

How is wind speed and damage related

All of the following can be used to define a base except a hydronium ion donor in a reaction a substance that increases the concentration of hydroxide ions an electron pair donor in a reaction a substance that is a hydrogen ion acceptor in a

Which of the following statements is true of proteins? Proteins lose some or all of their normal activity if their three-dimensional structure is disrupted. Proteins are composed of ribose, phosphate, and a nitrogen-containing base.

If a car uses 51 miles per gallon how many gallons would be used at 295 miles

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral

What variables affect the acceleration of an object and in what manner do they affect the acceleration?

How do valence electrons relate to the chemical reactions of an element?