Chemistry, 03.01.2022 02:30 jonataespi5924
How many moles of NaCl are there in 3.90 x 10^24 particles?
Answers: 3
Chemistry, 22.06.2019 01:30
What is the value of keq for the reaction expressed in scientific notation
Answers: 1
Chemistry, 22.06.2019 09:20
What will most likely happen when two bromine atoms bond together?
Answers: 3
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 14:00
8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
Answers: 3
How many moles of NaCl are there in 3.90 x 10^24 particles?...
Computers and Technology, 12.04.2021 16:20
Mathematics, 12.04.2021 16:20
History, 12.04.2021 16:20
Mathematics, 12.04.2021 16:20
Biology, 12.04.2021 16:20
History, 12.04.2021 16:20
Mathematics, 12.04.2021 16:20
Mathematics, 12.04.2021 16:20
History, 12.04.2021 16:20
Mathematics, 12.04.2021 16:30