Chemistry, 04.05.2021 20:00 maksimgelmud7
C6H6 (l) + 15/2 O2 (g) → 6 CO2 (g) + 3 H2O (g)
Answers: 1
Chemistry, 22.06.2019 03:30, ilizzy1224
Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?
Answers: 3
Chemistry, 22.06.2019 05:30, medlinalex
Compare and contrast physical changes with chemical changes.
Answers: 1
Chemistry, 22.06.2019 11:40, Wemaybewrong
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.)
Answers: 1
Chemistry, 22.06.2019 14:00, coylenoah0
How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene
Answers: 2
C6H6 (l) + 15/2 O2 (g) → 6 CO2 (g) + 3 H2O (g)...
Social Studies, 01.04.2020 17:56
History, 01.04.2020 17:56
Mathematics, 01.04.2020 17:57
Mathematics, 01.04.2020 17:57