Defination of hydrocarbons

Which of the following statements does not accurately describe Precambrian Earth? A. The atmosphere was similar to that of early Mars and Venus. B. The oceans were chemically different from modern oceans. C.

Why does stirring increase the rate of dissolution? A. Stirring the solution decreases the kinetic energy of the solution. B. Stirring the solution increases the surface area of the solution. C.

Which type of weathering is cause by plants a. ice wedging b. both mechanical and chemical weathering c. mechanical weathering d. chemical weathering

If 33.6 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? A. 21.2% KCl B. 5.71% KCl C. 14.9% KCl D. 17.5% KCl

What is the bond angle for a trigonal pyramidal molecule?

What process makes volcanic mountains?

Why is there no change in the temperature when the process of melting takes place?

Summarize the acid-base behavior of the main-group metal and nonmetal oxides in water. How does oxide acidity in water change down a group and across a period?

What is an atom?

Sodium will react with oxygen to form sodium oxide. use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction.