Which of the following is an example of a form of energy? a) the air in a sealed jar
b) the wire in a metal hanger
c) the water in a small puddle
d) the sound in a loud classroom

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.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1