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What mass of (NH4)2SO4 is required to make 1.25 L of a 0.250 M solution of (NH4)2SO4? Suppose that the variance for a set of data is zero. What can you say about the data? Chemistry:
If 200.4g of water is mixed with 101.42g of salt, the mass of the final solution would be reported as? Is scandalization a word? Calculate the z-score for a student receiving a 77.5 on a test with a mean of 87.5 and a standard deviation of 3.84.?