Worldwide, scientists are working on different options for clean energy to replace the burning of fossil fuels. One option that could potentially be successful is the use of hydrogen gas. This gas can be generated through a reaction between carbon and water. Based on what you have learned in this lab, use the chemical equation and Hess's law to determine the heat of formation and if this reaction is exothermic or endothermic.

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

може ли да зареждате повече информация, моля

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter