Explain why does never weigh a hot object
1. Explain why does never weigh a hot object?
2. Illustrate the principle of conservation of matter?
3. How could you separate a mixture of cyclohexane and zinc chloride?
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At an initial pressure of 6.00atm a gas, expands from 10.0 liters to 12.00 liters against a constant external pressure of 3.00atm and in calories: (11-atm=24.217cal)
A student found that her mixture was 20%NACL, 15% NH4CL and 75% SIO2. Explain what did she most likely do incorrectly in her experiment?
Point P(3,1) lies on curve y=sqrt(x-2). If Q is point(x,sqrt(x-2)) on curve, then slope of secant line PQ correct to 6 decimal places when x = 2.99 is?
Explain how could you separate zinc chloride from SIO2? Explain why is the NACL extracted with water three times as opposed to only once?
Explain why does never weigh a hot object? Illustrate the principle of conservation of matter? How could you separate a mixture of cyclohexane and zinc chloride?
Calculate the weight of the watch glass and sample in grams if a 141-mg sample was placed on a watch glass that weighed 9,203g.
Determine the mean volume and the average deviation from the mean if a pipet delivers 10.04, 10.02, 10.08, and 10.06 ml inconsecutive trials.
A 10.0 mL sample of gastric juice obtained several hours after a meal in a hospital laboratory was titrated with 0.1 M NaOH to neutrality; 7.2 mL of NaOH was needed.
Draw a diagram of how you plan to make your serial dilutions. Suppose you need to prepare five 2X serial dilutions in water of a 2.5mg/ml protein stock solution.
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