Consider the reaction below. 2H2 + O2 Right arrow. 2H2O

How many moles of water are produced from 13.35 mol of oxygen?
6.675 mol
26.70 mol
53.40 mol
66.75 mol

The identities of substances are the same before and after which type of change

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line