Question 13 (2 points) Which statement best describes energy in an open system? (2 points)
All energy and matter are contained within the system,
b
Energy and matter flow into and out of the system,
Оe
Matter flows into and out of the system; energy does not
Od
There is no energy in an open system, there is matter

Stage in which a star’s outer layers have started to cool and grow outward?

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.