Which one of these exhibits a notochord at some stages of its development?
a brittle st...
Chemistry, 27.09.2019 21:50 xwalker6772
Which one of these exhibits a notochord at some stages of its development?
a brittle star
a tapeworm
a cat
a hydra
Answers: 2
Chemistry, 22.06.2019 01:30
Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)
Answers: 1
Chemistry, 22.06.2019 03:30
The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.
Answers: 2
Chemistry, 22.06.2019 05:20
Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally
Answers: 1
Chemistry, 22.06.2019 15:30
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)
Answers: 1
Mathematics, 29.07.2020 18:01
Computers and Technology, 29.07.2020 18:01
Mathematics, 29.07.2020 18:01
Mathematics, 29.07.2020 18:01
Computers and Technology, 29.07.2020 18:01