Question: +why do you think you recorded two observations? one when you combined the unknown and compound initially and one after you waited for ten minutes

Is laundry detergent an acid or a base?

The point along a planet's orbit where it is closest to the sun is called the

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?