Can someone please answer this question for me

Question

Very large numbers should be entered in exponential notation. Any numbers obtained from the periodic table should be rounded to the nearest 0.5 or a whole number.

Write the correct chemical formula for the following compounds	Calculate the molar mass
lithium carbide	g/mole
potassium bisulfate	g/mole
cesium phosphate	g/mole
francium oxalate	g/mole
lithium bisulfite	g/mole

 

Answer 1

You can just google the compound you have listed to find their chemical formula. Once you get it, look up each element on the Periodic Table and multiply the number of atoms by the element atomic weight and add them all up.

Example: lithium carbide = Li₂C₂

Look up Lithium: 6.941 g/mol, according to your directions, round to 7 then multiply by 2 (since there are two atoms) = 14

Look up Carbon: 12.011 g/mol, according to your directions, round to 12 then multiply by 2 (since there are two atoms) = 24

Add them up: 14 + 24 = 38 g/mol