Pha 400ml nước với 100ml dung dịch Hcl có pH = 2 thì thu được dung dịch mới có pH bằng bao nhiêu?

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Why do oxygen have a strong attractive force for electrons