Topic experiment of rate of reaction. answer with explanations. don't answer bad things or wrong you would be reported.

What semimetal can form four single covalent bonds.

How do you determine the percent yield of a chemical reaction

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?