Never underestimate the joy people derive from hearing something they already know.
What the meaning of the quote? Do you agree? How does it relate to your life or the world?

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

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

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.