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0.4276-g sample of a potassium

I've been really struggling with this question, could someone please walk me through it.x+y=0.4276 (so, y=0.4276-x)
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2. asked by Anonymous
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Potassium has an atomic mass of 39.10amu. a sample of potassium is made up of isotopes potassium-39 (mass=38.964) and
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2. asked by Skylar
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0.4276-g sample of a potassium hydroxide – lithium hydroxide mixture requires 31.20 mL of 0.3315 M HCl for its titration to
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2. asked by Tiff
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0.4276-g sample of a potassium hydroxide – lithium hydroxide mixture requires 31.20 mL of 0.3315 M HCl for its titration to
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2. asked by Anonymous
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A 5.000g sample of a dry mixture of potassium hydroxide, potassium carboate and potassium chloride is reacted with 0.100 L of
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2. asked by Catherine
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A 0.1818 g sample of sodium oxalate required 28.12 ml of a potassium permanganate solution to reach the endpoint (assume the
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2. asked by Anonymous
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I said building up sample of 25 vitamin tablets is obtained in the potassium contact of each tablet is measured. The sample has
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A compound contains only potassium and iodine. A sample weighing 12.3 g of this compound contained 2.90 g of potassium. How many
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2. asked by Madoo
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A 16.48 g sample of potassium permanganate is dissolved in a 250.0 mL volumetric flask. A 125.1 mL sample of the potassium
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2. asked by Millie
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To determine the mass percentage of an iron sample, the dissolved sample [iron exists at the start as iron(II)] was titrated
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2. asked by Anna
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