Make a 200ml solution a 5mM NaCl, 0.5M KOH, and 0.8 CaCl2
The lab manager asks you to make her a 200ml of 500mM cacl2. there is a bottle labeled 20% cacl2. How do you make 200 of 500mM cacl2 using the stock solution, 20% cacl2?
0.8 moles of NaCl is dissolved to make 500ml of solution.
You need to prepare 200ml of a 0.4M solution of copper sulfate (CuSO4). You have 80mL of a 0.5M CuSO4 solution and 100ml of 7.5% (w/v) CuSO4 solution. What volume of 7.5% CuSO4 and water needs to be added to the 80mL of 0.5M CuSO4 solution to make up 200mL of 0.4M CuSO4? Molar mass of CuSO4 = 159.609 g/mol % (weight/volume) means mass (in g) in volume (100mL)
If I need to make up 1L of a 0.5M soln of CaCl2, how many grams would I need?
Suppose a 12.42g mixture of NaCl and CaCl2 is dissolved in water. To this solution, an excess of AgNO3 solution is added resulting in the formation of 31.12g of the precipitate. Calculate the % by mass of NaCl and CaCl2 in the original mixture. Show all work.
Suppose a 12.42g mixture of NaCl and CaCl2 is dissolved in water. To this solution, an excess of AgNO3 solution is added resulting in the formation of 31.12g of the precipitate. Calculate the % by mass of NaCl and CaCl2 in the original mixture. Show all work.
What is the mass of NaCl in 2.5L of a 0.5M solution? Select the correct answer below: A) 73.05 g B) 292.2 g C) 46.75 g D) 58.44 g
400 g NaCl and 800 g CaCl2 are added to water. 153g if NaCl are now in solution and 651 g of CaCl2 are in solution. if we now add an undetermined amount of Ca(NO3)2 to the solution, how do we go about seeing if the nitrate and sodium may precipitate another salt?
Balance the following chemical equations:
1.) CaCl2 + KOH
KCl + Ca(OH)2
2.) CaCl2 + Na3PO4
NaCl + Ca3(PO4)2
3.) CaCl2 + Li2CO3
KCl + CaCO3
4.) Fe(NO3)3 +
NaC2H3O2 + H2O
NaNO3 +
Fe3O(C2H3O2)6+
+ H3O+ + NO3-
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A solution is 0.0950 M in NaCl, 0.0860 M in CaCl2 and 0.0620 M in AlCl3. What is the molar concentration of chloride ion? A. 0.453 B. 0.243 C. 0.329 D. 0.338 E.0.367