Probability of getting exactly four correct answers
A multiple-choice test has 30 questions and each one has five possible answers, of which one is correct. If all answers were guesses, find the probability of getting exactly four correct answers
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A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86ml of the Na2S2O3 for titration.
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Prepare a written plan for making up 100.0mL of 0.100M KIsolution.(note the list of reagents and equipment provided on the preceding) Include in your plan the exact amount of KI that you will need the actual steps that you will take to prepare the
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A projectile with mass of 533 kg is launched straight up from the Earth's surface with an initial speed vi. What magnitude of vi enables the projectile to just reach a maximum height of 4.6RE, measured from the center of the Earth? Ignore air fric
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