How many moles of Sr(NO3)2 would be used in the preparation of 2.50 L of a 3.5 M solution?

27 drag each label to the correct location on the image. a particular exosolar system has five planets in total: a, b, c, d, and e. the table lists the orbital periods of these planets in days. planet orbital period (days) a 600 b 80 c 1,000 d 500 e 100 move each planet to its orbit in the system.

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3

How does science use models to gain a better understanding of concepts?