Chemistry, 01.04.2021 22:40 mollywolly99
An irregularly-shaped sample of aluminum (Al) is put on a balance and found to have a mass of 65.5 g. The student decides to use the water-displacement method to find the volume. The initial volume reading is 50.6 mL and, after the Al sample is added, the water level has risen to 68.5 mL. a. Based on the problem above, write the known and the unknown quantities, respectively. b. What is the volume of aluminum (Al)?c. Find the density of the Al sample in g/cm3.
Answers: 2
Chemistry, 21.06.2019 19:00
State the formula for density in words and mathematical symbols
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Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.
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Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
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Chemistry, 22.06.2019 07:30
The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.
Answers: 2
An irregularly-shaped sample of aluminum (Al) is put on a balance and found to have a mass of 65.5 g...
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