Reference no: EM132953880

Use correct numbers of significant figures for all calculations

1. How many grams of NaCl are found in a 261.5 mL 0.900 % (m/v) saline, NaCl, solution? 
2. Calculate the molarity when 0.68 g O2 is dissolved in a total of 344.7 mL of solution. 
3. What volume, in mL, of 1.50 M FeSO4 is required to make 287.5 mL of a 0.590 M solution? 
4. Calculate the unknown concentration of an NaOH solution if 0.224 g of oxalic acid, H2C2O4*2H2O, requires 19.08 mL to complete the titration. The reaction between H2C2O4*2H2O and NaOH is: H2C2O4 *2H2O + 2 NaOH --> 2 H2O + Na2C2O4
5.  Calculate the volume (mL) of a 0.823 M solution of sulfuric acid required to react with 0.288 g of aluminum. 2Al(s)  +  3H2SO4(aq) --> Al2SO4(aq)  + 3H2(s)
6. Calculate the volume, in mL, of 0.225 M K2S solution is required to completely react with 175 mL of 0.115 M Co(NO3)2. K2S(aq)  +  Co(NO3)2(aq) --> 2KNO3(aq + CoS(s)