Determining grams dissolved in a solution?

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Determining grams dissolved in a solution?

How much Na2SO4, in grams, must be dissolved in water to produce 77.0 mL of 0.224 M Na2SO4 solution?

2007-10-02 07:16:29 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

1L of 0.224M contains 224mM in one liter and 0.224mMolein 1mL
so 77mL of 0.224mM contains
0.224*77=17.248mM of Na2SO4

the molar mass of Na2SO4 =2*23+32+4*16=142g

and 17.248 mM= 142*17.248*10^-3=2.449g of Na2SO4

2007-10-02 07:23:32 · answer #1 · answered by maussy 7 · 0⤊ 0⤋