Kia's remaining water has a mass of 50g. You can set it up as a proportion knowing that 100ml of water has a mass of 100g and thus 50ml of water would weight 50g
        
                    
             
        
        
        
Answer:
THE VOLUME OF THE NITROGEN GAS AT 2.5  MOLES , 1.75 ATM AND 475 K IS 55.64 L
Explanation:
Using the ideal gas equation
PV = nRT
P = 1.75 atm
n = 2.5 moles
T = 475 K
R = 0.082 L atm/mol K
V = unknown
Substituting the variables into the equation we have:
V = nRT / P
V = 2.5 * 0.082 * 475 / 1.75
V = 97.375 / 1.75
V = 55.64 L
The volume of the 2.5 moles of nitrogen gas exerted by 1.75 atm at 475 K is 55.64 L
 
        
             
        
        
        
Molarity is given as,
                              Molarity  =  Moles / Volume of Solution  ----- (1)
Also, Moles is given as,
                              Moles  =  Mass / M.mass
Substituting value of moles in eq. 1,
                              Molarity  =  Mass / M.mass × Volume
Solving for Mass,
                              Mass  =  Molarity × M.mass × Volume  ---- (2)
Data Given;
                  Molarity  =  2.8 mol.L⁻¹
                  M.mass  =  101.5 g.mol⁻¹
                  Volume  =  1 L (I have assumed it because it is not given)
Putting values in eq. 2,
                              Mass  =  2.8 mol.L⁻¹ × 101.5 g.mol⁻¹ × 1 L
                              Mass  =  284.2 g of CuF₂
        
             
        
        
        
Answer:
what are the answer choices? 
Explanation: