Whos good at the periodic table cus im not help

Connect the whole numbers on the periodic table to indicate what they represent?

How many grams of sodium chloride are in 250ml of a 2.5m naci solution

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability