In a laboratory activity, the density of a sample of potassium is determined to be 0.97 g/cm3at room temperature. If the accepted density for potassium is 0.89 g/cm3. What is the percent error for the determined value? * 5.2% 8.9% 9.0% 15%

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %