The decomposition of hydrogen peroxide, h2o2, has been used to provide thrust in the control jets of various space vehicles. using the data in appendix g, determine how much heat is produced by the decomposition of exactly 1 mole of h2o2 under standard conditions. 2h2 o2 (l) ⟶ 2h2 o(g) + o2 (g)

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.)

How do you convert 4 mmol of bromobenzene to ml?

Chromosome 17 is made of over million base pairs.