Which of the following graphs are one-to-one?

How many moles of F2 are needed to react completely with mol of NH3 in the following reaction?  2NH3(g) + 5F2(g)  —-> N2F4(g) + 6HF(g)  

Which of these compounds in NOT considered weak? 

How many grams of solid sodium carbonate (Na2CO3, 105.99 g/mol) would be required to neutralize L of 1.0 M HCl? 

Do you understand the directions?

Tetraphosphorus hexaoxide (MW=219.9 g/mol) is formed by the reaction of phosphorus with oxygen gas. If a mixture of g of phosphorus (123.88 g/mol) produces g or P4O6, what is the percent yield for the reaction?  P4(s) + 3O2(s) —–> P4O6(s)    

Matching: For each characteristic of the graph below match it to its correct notation.

**This is a show your work question. Write out your work on a scratch piece of paper and hold it up to the camera when you are finished. You can type your answer in best you can in the box or type in “I held up my answer”. Ensure your camera focuses on your scratch paper so Professor Bramall can clearly read it when she pauses the recording.**   Find a formula for