Chemistry, 13.09.2019 22:30 dinapearce6078
For each of the following units and concentration values, mention if they are parts per million (ppm), parts per billion (ppb) or parts per trillion (ppt) to
a. g / ton
b. mg / l
c. μg / l
d. ng / l (ng = nanogram) and e
e. mg / ton
Answers: 1
Chemistry, 21.06.2019 22:30
Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?
Answers: 1
Chemistry, 22.06.2019 05:50
According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?
Answers: 1
Chemistry, 22.06.2019 08:00
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
Answers: 2
Chemistry, 22.06.2019 19:50
If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?
Answers: 2
For each of the following units and concentration values, mention if they are parts per million (ppm...
History, 30.07.2019 01:30
Social Studies, 30.07.2019 01:30
Business, 30.07.2019 01:30
Mathematics, 30.07.2019 01:30
Mathematics, 30.07.2019 01:30
Social Studies, 30.07.2019 01:30
Biology, 30.07.2019 01:30
Arts, 30.07.2019 01:30
Arts, 30.07.2019 01:30
Arts, 30.07.2019 01:30
World Languages, 30.07.2019 01:30