Which kind of bond occurs when two atoms share an electron

What is the common name for the compound shown here? enter the common name of the compound shown?

In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?