A .523g sample of a

  1. a 2.50g sample of hydrate of calcium sulfate losses 0.523g of water when heated. what is the mass percent of water in the
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    2. mocha81 asked by mocha81
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  2. A .523g sample of a mix of Na2co3 and Nahco3, is titrated with .1 HCl requiring 17 ml to reach the phenolphthalein end point and
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    2. Austin asked by Austin
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  3. Which of the following statements about the two sample sizes is NOT true? Assume thepopulation standard deviations are equalA.
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  4. To make valid statistical inferences from a sample to a population, you use:a judgement sample a quota sample a convenience
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  5. Two samples of double-stranded DNA have been prepared. Nucleotide analysis reveals that sample 1 is found to be 21% A, while
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    2. Kate asked by Kate
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  6. The function f (x) = 735 (1/2)^x models the number of grams in a sample of a radioactive substance after x years. Which
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  7. Federico has two samples of pure water—sample X and sample Y. Sample X has a volume of 1 L, and sample Y has a volume of 10 L.
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  8. Federico has two samples of pure water—sample X and sample Y. Sample X has a volume of 1 L, and sample Y has a volume of 10 L.
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  9. QUESTION 11Which of the following sampling methods is not a nonprobability sample? A)convenience sample B)quota sample
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  10. Two independent samples from populations that are normally distributed produced the following statistics: for sample 1 the
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