Review the following list and select either an "h" if the item is a hazard, a "b" if it's a benefit, or "hb" if it can be both a hazard and a benefit. pyroclastic flows volcanic ash geothermal energy lahars lava flows volcanic materials (pumice, lava rock)

What does x represent in the formula for the compound xcl4?

1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /

What is avogadro’s number, and why is it useful