Answers: 1
Chemistry, 21.06.2019 14:30
An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms
Answers: 3
Chemistry, 22.06.2019 05:00
Which position represents spring in the southern hemisphere? a) b) c) d)
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 20:00
What happens to the temperature of a substance when the average kinetic energy of its particles increases?
Answers: 3
How are salinity, temperature and circulation related?...
Mathematics, 20.04.2020 02:59
Chemistry, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59
Mathematics, 20.04.2020 02:59