Kf is a strong electrolyte, and hf is a weak electrolyte. how is the solution of kf different from that of hf?

This graph gives information on changes in sea ice extent in the arctic ocean over a 30-year span. the overall trend shows in the ice extent. to address the trend, scientists need to ask themselves, one direct consequence of the trend is that

How many atoms are there in 5.70 mol of mg

One nanometer is equal to how many meters?