Which of the following is true of photosynthesis?

A. Most reactions within this process are exothermic

B. Water is a product

C. Carbon dioxide is a reactant

D. Oxygen is a reactant

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .

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.