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A 7.500-mg sample of chromium-55

A 7.500-mg sample of chromium-55 is analyzed after 14.0 min. and found to contain 0.469 mg of chromium-55. what is the half-life
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2. asked by Jasmine08
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a 7.500-mg sample of chromium-55 is analyzed after 14.0 min and found to contain 0.469 mg of chromium-55. what is the half-life
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2. asked by lisa
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isotope chromium -51 has a half life of 28 days. If the original sample had a mass of 28.0 grams, what mass of chromium -51
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2. asked by Andrea
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A laboratory has a 2.0-mol sample of pure selenium and a 2.0-mol sample of pure chromium. How many more grams of selenium than
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2. asked by Allison
3. 604 views
Sort the following chromium compounds by whether the cation is chromium(II) or chromium(III). Cr2S3, Cr3P2, Crl3, CrO, CrBr2,
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2. asked by mysterychicken
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I was wading in the creek and discovered what I thought to be a small meteorite. I took a small sample of it home, and
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2. asked by Anonymous
3. 326 views
Stainless steel is an alloy of iron containing 5 percent nickel and 0.175 percent chromium. How much chromium is present in a
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2. asked by DJ
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last one, i PROMISEA compound containing only C, H, O and Cr was subjected to combustion analysis. A sample of 10.88 mg produced
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2. asked by confused student..
3. 641 views
A car bumper is plated with chromium using chromium (III) ions in solution. If a current of 53.2 A flows in the cell for 49
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2. 127 views
Chromium is ametal that is added to steel to improve its resitance to corrosion. Calculate both the number of miles in a sample
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2. asked by Chopsticks
3. 1,972 views