For an experiment, a biology student makes 1 liter of a solution containing the following substances, which are shown in the table below. using the given information, fill in the missing parts of the table for each substance by (a) providing the formula weight and (b) calculating either the mass the student needs to weigh out or the number of moles that the student has, based on the amount weighed out. for each calculation, show your work. be sure to include the formula mass of water for cacl2 • 2h2o and nah2po4 • h2o.

1. NaCl  
formula weight - 58,4 g/mol.
number of moles - 0,14 mol
mass - 58,4 g/mol · 0,14 mol = 8,176 g.
2. KCl 
formula weight - 74,55 g/mol.
number of moles - 0,005 mol
mass - 0,372 g.
3. C₆H₁₂O₆
formula weight - 180,1 g/mol.
number of moles - 0,0056 mol
mass - 180,1g/mol · 0,0056 mol = 1,01 g.
4. NaHCO₃
formula weight - 84 g/mol.
number of moles - 0,0262 mol
mass - 2,2 g.
5. CaCl₂·H₂O
formula weight - 147 g/mol.
number of moles - 0,001 mol
mass - 0,15 g.
6. MgSO₄
formula weight - 120,3 g/mol.
number of moles - 0,0008 mol
mass - 0,096 g.
7. NaH₂PO₄·H₂O
formula weight - 138 g/mol.
number of moles - 0,001 mol
mass - 0,14 g.

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