Into a 0.25 m solution of nacl(aq), excess al(no3)3(aq) was added to form alcl3(s). 3nacl(aq) + al(no3)3(aq) ? alcl3(s) + 3nano3(aq) if you knew the volume of the solution containing nacl(aq), determine how you would predict the mass of alcl3(s) formed by completing the following solution map. drag the appropriate labels to their respective targets.

2)dimensional analysis simply refers to the inclusion of units in an equation. after setting up the solution map, dimensional analysis can be used to set up the conversion factors that lead to the desired values within this map. the correct setup of an equation can be verified by checking if the result will only have the desired units after unit cancellation. 3nacl(aq) + al(no3)3(aq) ? alcl3(s) + 3nano3(aq) for the described reaction, you have a 0.280 l solution of 0.700 m nacl(aq). using the solution map from part a as a guide, complete the following dimensional analysis that allows you to calculate the moles of alcl3(s) that can be formed by placing the values of each conversion factor according to whether they should appear in the numerator or denominator. drag the appropriate values to their respective targets.

3) when you are presented with additional details, it can sometimes be a little more difficult to determine which information is necessary and how molarity should be applied. using both a solution map and dimensional analysis can clarify which information and conversion factors are necessary to determine the desired value. the following dimensional analysis setup could be used to determine the theoretical mass of albr3(s) (molecular mass = 266.69 g/mol ) produced based on reacting 62.2 g of a 0.016 mol/l solution of br2(l) (density = 1016 g/l ) with excess al(s) as described in the following equation: 3br2(l) + 2al(s) ? 2albr3(s) complete the dimensional analysis for calculating the mass of the product by placing the values of each conversion factor according to whether they should appear in the numerator or denominator when calculating the mass of albr3(s) produced from a sample of br2(l). drag the appropriate values to their respective targets.

Show transcript transcripts online experiment: atomic structure [the history of atomic theory] this animation will you test rutherford’s hypothesis that it took a great number of shots to actually hit the nucleus because the size of the atom was so much larger than the nucleus.[clipboard and pencil with a diagram of rutherford’s gold foil experiment] we are going to use a cardboard box to represent the atom, a wooden block to represent the nucleus, and marbles to represent the alpha particles. [animated cardboard box, wooden block, and marbles] the box’s measurements are: length = 50 cm, width = 25 cm, and height = 25 cm. the measurements of the block are: length = 10 cm, width = 10 cm, and height is 5 cm. jose and priscilla will conduct the experiment. [animated boy and girl] priscilla put the block in the box on the floor. jose will close his eyes and drop marbles into the box trying to hit the block. priscilla will count the number of times the marbles hit the block and move the block in the box after each hit. [animated block moving inside the box. marble dropping into the box.] here is priscilla’s data of how many times the marble hit the block. out of 100 marble drops or shots, the marble hit the block 32 times. [data table: first column: marble, with rows 1 to 100; column 2: hit, with rows indicating yes or no. last row: total hits] now you can follow the directions in the experiment to present your findings. present your findings when you are finished with the experiment, complete the following data analysis and record your answers in the essay box below. determine the volume of the box and the block. determine the ratio of the block to the box: multiply this number by 100 to turn it into a percent. complete this statement: the volume of the block is percent of the volume of the box. determine the ratio of the number of hits to the number of shots: multiply this number by 100 to turn it into a percent. complete this statement: the block was hit percent of the time. compare the results of step 2 to the results of step 3. are the percentages similar? write a conclusion discussing the following items: based on your findings, do you think rutherford's hypothesis was reasonable? restate rutherford's hypothesis and describe how you tested it. state whether your results support the hypothesis. if they do not, can you suggest some error in experimental procedure (other than general human error) that might explain it? finally, explain how this experiment confirms the nuclear model of the atom and the idea that most of the atom is empty space.