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Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Compare and contrast refraction of light and sound will give brainliest

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