The is the layer of the atmosphere is closest to the surface of earth
a. mesosphere
b....
Chemistry, 23.11.2019 16:31 stevenssimeon30
The is the layer of the atmosphere is closest to the surface of earth
a. mesosphere
b. stratosphere
c. thermosphere
d. troposphere
Answers: 2
Chemistry, 22.06.2019 04:30, aleilyg2005
There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.
Answers: 3
Chemistry, 22.06.2019 06:00, Chente379
An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.
Answers: 2
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
History, 20.10.2019 14:30
Mathematics, 20.10.2019 14:30