what makes a cuvette different than an ordinary test
tube
This is concerning a spectrophotometer exercise. We used two different sized test tube cuvettes. One was taller/larger; one was shorter/smaller. We filled each cuvette with the same solution. However, the taller cuvette had an absorbance reading of .108, while the shorter cuvette had a reading of .131. Why did I obtain different readings for the same solution when read in different-sized cuvettes? Thank you.
if you have a test tube containing a certain volume of two different compounds in solid form which are then dissolved in a water bath how would you fijd the mole fractions for each test tube from weight percentage
Coomunity health I How is life review similar and different than ordinary remembering?
F. Hydrolysis of disaccharides and polysaccharides Test tube #1 Test tube #2 Test tube #3 Test tube #4 Test tube contents 2 to starch 2% starch 2% sucrose 2% sucrose Iodine test observations Polysaccharide present? (yes/no) no yes yes no Benedict's test observations Cloudy cloudy I brownish peach I greenw/ in COLOR precipitate butter precipitate COLOK w Red at no color Change Yellowish ves Hydrolyzed? (yes/no) no What observation indicated the presence of a polysaccharide? The color of the iodine...
Please answer and explain, thank you 1) What makes an enzyme different from an ordinary catalyst? (I chose c?) a. an enzyme is made of carbohydrates b. an enzyme is made of DNA c. an enzyme only catalyzes specific reactions d. an enzyme can make a reaction go backward without energy output 2) Which of the following can enter a cell by simple diffusion? a. oxygen b. glucose c. sodium d. ATP 3) Which of the following will past most...
Suppose you filled one test tube with alanine and a second test tube with casein, but forgot to label the test tubes. What test could you run on the samples to confirm which test tube contained the alanine? Explain.
Briefly describe the structure of RNA. What makes it different than DNA? What do DNA and RNA stand for? What are their roles? What are the DNA base pairing rules? What are the RNA base pairing rules? Describe what the following abbreviations stand for (ACGTU). What is the “norm” for lactose digestion in adults? Why are some people lactose intolerant? Is lactose tolerance relatively recent or ancient?
To test if the mileage of three different makes of cars is the same, randomly selected trips on those makes are recorded and the data is shown below for the miles per gallon of the trips Make 1 Make 2 Make 3 29.9 45.8 34.8 31.1 40.3 41.4 23.5 36.6 40 30.5 29 37.6 35.4 40.3 41.4 33 33 48.1 28.5 35.5 37.2 32.4 34.9 44.1 25.7 31 42 40.3 44.9 Use one way ANOVA to test if the means...
An empty test tube weighs 15.923 grams. Then, MgCl2•6H2O is added into the test tube. After the addition of MgCl2•6H2O, the test tube weighs 16.619 grams. Then, water is added into the test tube. Now, the test tube weighs 28.216 grams. Calculate: 1). The moles of MgCl2 added to the test tube 2). The mass of water in the MgCl2•6H2O added to the test tube. 3). The mass of water added to the test tube.
Two dialysis tube was filled with sodium polyacrylate and was left in a test tube filled with water for 2 hours. one had a fan being blown on it. 1. Was the water volume in the test tubes more or less after the two-hour period than it was at the beginning of the experiment? If there was a difference in either of the test tubes, what caused this change? There was less in both tubes. 2. Did this amount vary...