a 500ml sample of oxygen

  1. what mass of magnesium is needed to reduce a 500ml sample of oxygen at stp to a 375ml sample?Mg + O2--> MgO + O2
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    2. Erin asked by Erin
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  2. what mass of magnesium is needed to reduce a 500ml sample of oxygen at stp to a 375ml sample?Mg + O2--> MgO + O2
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    2. Anonymous asked by Anonymous
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  3. a 500ml sample of oxygen gas at 24 degree celsius was prepared by decomposing a 3% aqueous soution of hydrogen peroxide in the
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    2. Elizabeth asked by Elizabeth
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  4. A 36.1 mL sample of oxygen gas contains 0.529 mol of oxygen. If enough oxygen is added to the sample to obtain a volume of 50.5
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    2. Br¥an asked by Br¥an
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  5. In a certain compound of copper and oxygen, a sample weighing 0.5424g contains 0.4831 g of Cu. How many moles of Cu in the
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    2. Jester21 asked by Jester21
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  6. In a certain compound of copper and oxygen, a sample weighing 0.5424g contains 0.4831 g of Cu. How many moles of Cu in the
    1. answers icon 1 answer
    2. Jester21 asked by Jester21
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  7. a 500ml sample of o2 gas at 24 degrees celsius was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, in this
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    2. Michelle asked by Michelle
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  8. I don't know exactly how to start this question:A sample gas contains 2.95 x 10e24 molecules. The sample is 21.0% oxygen.
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    2. Elizabeth asked by Elizabeth
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  9. A sample of 25users of a gym had their oxygen consumption measured for 30 minutes after arunning exercise.The sample mean and
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    2. olek asked by olek
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  10. In a certain compound of copper and oxygen, a sample weighing 0.5424 g contains 0.4831 g Cu. How many moles of copper are in the
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    2. cook asked by cook
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