What structure what structural feature of cells can allow molecules to flow directly from the inside of one cell to the inside of the next a. plasmodesmata b. chloroplast c. cilia or d. plasmids

Type the correct answer in the box. spell all words correctly .what does biodiesel produce in higher amounts? biodiesel produces higher amounts

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

What is the percent by mass of magnesium sulfate in mgso4.7h2o