Agas containing n = 1021 hydrogen atoms is heated to a temperature of 3 × 103 k. 1)on average, about how many atoms will have their electrons excited from the ground level s to the first excited level p? the s-level contains 2 states and the p-level contains 6 states, and the energy splitting is 10.2 ev. (you may ignore all the other hydrogen states.)

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

The diagram below shows a cell placed in a solution. a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution. only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it. it will expand as water moves into it. it will shrink as water moves into it.