What is the poh of a solution with oh - = 9.0 x 10-7?

What is the most effective alkaline or acidic?

Which statement best describes the effect of beta particles on body tissue? A.) They cause more damage than gamma rays but less than alpha particles. B.) They cause more damage than alpha rays and gamma rays combined. C.

An emerald gemstone is an impure form of the mineral beryl, Be3Al2Si16O18. What is the percentage of silicon in the mineral? a. 6.59% b. 54.9% c. 35.2% d. 3.30% e. 3.43%

Which of these describes an endothermic reaction? Energy is released by the reaction. Energy is absorbed by the reaction. No energy is transferred by the reaction. Energy is created in the reaction.

Table salt and water are examples of

What's the difference between an iconic bond and a covalent bond? A. an iconic bond Is a bond between charged atoms, while a covalent bond is a bond between neutral atoms B.

4. Given the chemical formulas of the following compounds, name each compound and state the rules applied to determine each name. Score • RbF • CuO • (NH4) 2C2O4 (Note: C2O4 - is called oxalate.)

The earth names for the 30 alien elements in order of atomic number

Worth 30 pts. Liquid vinegar and solid baking soda chemically react to form solid sodium acetate, liquid water, and carbon dioxide gas.

The electron configurations of two unknown elements X and Y are shown. X: 1s22s22p6 Y: 1s22s22p63s23p6 Which statement is most likely correct about the two elements?