0ne Al3+ ion has electrons;                   one 33P3- ion has ,  neutrons; electrons

Calculate the atomic mass and identify the element. exact mass,  amu                         percent abundance 34.968852                             75.77% 36.965903                             24.23%     

Compute the following: Number of moles of copper in 254 g of copper Mass of 0.050 mol of copper Mass of 1.81×1024 atoms of copper Number of moles of copper in 2 moles of Cu3(PO4)2

Round the number  0.0607545 to four significant figures.   

 Determine the mass of neon gas that has a volume of 21.6 L and a density of 0.90 g/L.       

The melting point of mercury is -38.8°C.  What is this temperature in Kelvins?

Identify the following elements: The noble gas period 6 Halogen period 2 Alkali metal period 5 The alkali-Earth metal period 4  The transitional metal period 5 Metalloid period 5   

Calculate the average atomic weight of Zn using the following data for the percent natural abundance and mass of each isotope: Zn-64 = 48.89%, 63.929 amuZn-66 =27.81%, 65.926 amuZn-67= 4.11%, 66.927 amuZn-68= 18.57%, 67.925 amuZn-70 =0.62%, 69.925 amu

The density of octane is 0.703 g/mL. What is the density of octane in lbs/Gal?

The mass of 450.5 mg equals