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Chemistry, 26.01.2021 01:00, ashleybarrera2000
Three students are asked to discuss the percent error obtained from this lab
and explain some sources of error that would account for the discrepancy
seen, if any. Select the student that employs correct scientific reasoning.
• Student 1: If the reaction was not allowed to go to completion, the sodium bicarbonate would
not have fully decomposed, making the final mass higher than the theoretical.
Student 2: If the baking soda was not heated long enough, the final mass of solid product would
be low
Student 3: The student didn't weigh the masses correctly therefore human error is the main
source of discrepancy.
.
O Student 1
O Student 2
OStudent 3
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.
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Adirect relationship can be represented by: a curve a pie chart
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Three students are asked to discuss the percent error obtained from this lab
and explain some sourc...
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