How much of a 250mg sample of N-16 has decayed after 21.39
seconds?

Chemistry answer as much as you can if you can't answer more then 2 don't answer

Choose all that apply. when creating a graph, you should: determine the x- and y- variables label the scale on the x- and y- axes plot the data points draw a line of best fit to represent the data trend

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap