Answers: 1
Chemistry, 22.06.2019 10:40
Asolid that forms and separates from a liquid mixture is called
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 13:30
If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion
Answers: 3
Chemistry, 22.06.2019 16:00
Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining
Answers: 1
What if you scored a 0.80 on a test what. fraction of the test in simplest form did you answer corre...
Social Studies, 28.08.2019 14:20
History, 28.08.2019 14:20
Computers and Technology, 28.08.2019 14:20
Mathematics, 28.08.2019 14:20
Biology, 28.08.2019 14:20
Social Studies, 28.08.2019 14:20
Health, 28.08.2019 14:20
Physics, 28.08.2019 14:20
History, 28.08.2019 14:20
Mathematics, 28.08.2019 14:20
Biology, 28.08.2019 14:20
Biology, 28.08.2019 14:20
English, 28.08.2019 14:20