Chemistry, 23.09.2019 11:00 johnbuffit08
You submerge an aluminum block into a large graduated cylinder and notice that the water displaces by 15ml. what is the mass of the aluminum block?
Answers: 2
Chemistry, 22.06.2019 11:40
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 12:30
The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?
Answers: 1
Chemistry, 22.06.2019 17:40
If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?
Answers: 1
Chemistry, 22.06.2019 21:00
Which property of water causes water drops to bead on a freshly waxed car?
Answers: 2
You submerge an aluminum block into a large graduated cylinder and notice that the water displaces b...
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Computers and Technology, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20
World Languages, 04.05.2021 20:20
Physics, 04.05.2021 20:20
Mathematics, 04.05.2021 20:20