Which of these is a physical change? a. iron rusts b. gas is burned c. paper is shredded (which i think it is but i wanna be sure) d. a shirt is bleached..

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors