A sample of hydrogen gas occupies 13.3 L at STP. How many
moles of the gas are present?...
Answers: 2
Chemistry, 21.06.2019 22:30
Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial
Answers: 1
Chemistry, 22.06.2019 12:00
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
Chemistry, 23.06.2019 03:30
Select the correct lewis structure for fluorine which is group 7a element?
Answers: 1
Chemistry, 23.06.2019 09:20
La reaccion entre monoxido de nitrogeno (no) y oxigeno para formardioxido de nitrogeno (no2) es un paso determinante para la formacion del smog, la reaccion es la siguiente: 2no + o2 = 2no2 cual sera el numero de moles de no2 que se formaran por la reaccion completa de 8 moles de oxigeno con suficiente monoxido?
Answers: 1
Health, 30.08.2021 14:00
History, 30.08.2021 14:00
Mathematics, 30.08.2021 14:00
Advanced Placement (AP), 30.08.2021 14:00
History, 30.08.2021 14:00
Mathematics, 30.08.2021 14:00
Mathematics, 30.08.2021 14:00
Mathematics, 30.08.2021 14:00
Computers and Technology, 30.08.2021 14:00
English, 30.08.2021 14:00
Social Studies, 30.08.2021 14:00