2. One reason a standard solution of NaOH cannot be prepared from solid NaOH is that solid NaOH is hygroscopic: it absorbs water vapor from the atmosphere. Assuming you calculated the concentration of a NaOH solution by measuring the mass of a solid sample of NaOH and dissolving it in water, how would this property of NaOH affect (e.g. increase, decrease, no change) the following steps in a titration? Justify your choice. The concentration of a NaOH solution made from solid NaOH that absorbed a significant amount of water prior to measuring its mass. Since the NaOH would absorb water, it's mass would be higher than that of just NaOH. When we do our calculation for concentration. our larger than actual mass will make the solution be calculate more concentrated than it really is. D.S. b. The volume of the resulting prepared NaOH solution needed to titrate an acid. a.

(0) Mechanism NaCN скокон

____GaF3  + ___Cs-->  ____CsF  + ____Ga     A. (2,2,3,1)   B. (1,3,2,1)   C. (1,3,3,1)   D. (2,3,1,3)   E. (1,2,3,1)

Q Search for 20 minutes. Then return, put it down, and weigh yourself immediately three times. Since reporting your weight is a little too personal, I want you to tell me the variation between each reading (called a first derivative measurement). You should see the first weight is somewhat higher than the rest; often as much as 2-3 pounds. What do you th this tells you about your scale's quality? All other data is provided in the lab procedure Questions So, go ahead and answer them, then. a For measuring the block, (part 1) measure something and tell me what it is. Today, definitions. Here are your lab questions: 1. Define significant figure 2. Define accuracy 3. Define precision 4. How many significant figures are present in the measurement 0.053402 mm? How many are in 0.053400? Calculate the following: For three replicate (repeated) measurements, your values are as follows: 3.510 g; 3.565 g; 3.593 Answer the following questions: a. What is the average? b. the percentage error (the…