Anonymous asked 12/28/2008

Hydrogen Gas Reacts With Copper(II) Oxide To Form Copper Metal And Water Vapor According To The Reaction: CuP + H2 ---- Cu + H2O. What Mass Of Copper Is Produced If 255 L Of Hydrogen At STP Are Used Up In This Reaction?

Anonymous asked 12/27/2008

What Is Co-ordinate Covalent Bond?

Anonymous asked 12/26/2008

Where Was Calcium Discovered And The Nature Of It's Discovery?

no one knows for sure asked 12/25/2008

What Is Lassaigne's Extract And How Can We Prepare It?

Anonymous asked 12/24/2008

Why Does The Colour Of Copper Sulphate Solution Change When An Iron Nail Is Dipped In It?

Anonymous asked 12/22/2008

Why Does Sodium Have The Chemical Symbol Na?

Anonymous asked 12/22/2008

What Makes Water Change From One State To Another?

Anonymous asked 12/21/2008

Why Is Helium Used In Balloons Instead Of Oxygen?

Anonymous asked 12/18/2008

What Happens To A Volume Of Air When It Is Heated?

Anonymous asked 12/17/2008

What Is The Temperature For Dry Ice?

Anonymous asked 12/16/2008

Why Is Vinegar Soluble In Water?

Anonymous asked 12/16/2008

Do All Liquids Freeze?

Anonymous asked 12/16/2008

What Type Of Structure Do Covalent Bond Create?

Anonymous asked 12/13/2008

What Is Air Made Up Of (as A Mixture?)

Tina Droddy asked 12/12/2008

Why Was Hydrogen Considered A Noble Gas?

Anonymous asked 12/9/2008

What Is The Formula For Hydrochloric Acid?

Anonymous asked 12/9/2008

What Is The Net Ionic Equation For AgNO3 + NaBr?

Anonymous asked 12/8/2008

What Is A Relative Atomic Number?

stella hollero asked 12/8/2008

What Is The Importance Of Freezing?

Anonymous asked 12/5/2008

What Are The Chemical Makeup Of Fat?