Question

Why i sit necessary to perform each of the tests on a known sample as well...

Why i sit necessary to perform each of the tests on a known sample as well as the unknown sample ?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

At the time of testing in order to find the unknown substance obtained in the reaction, we need to use the known substance and perform the test and then perform the same test to the unknown substance, if the results obtained are the same, then the unknown compound is the used known compound, otherwise use a new known compound and repeat the procedure

Hence it is necessary to perform the test of a known sample as well as the unknown sample, sometimes the test is carried out to check for the purity of the unknown sample

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Do not perform the tests! For each of the following scenarios answer the following: A) Write...
Do not perform the tests! For each of the following scenarios answer the following: A) Write the null and alternative hypothesis. B) Is it Z or T distribution? C) Is the test right, left, or two-tailed? D) What calculator function is used? E) What decision would you make based on the P-Value that resulted when I did the test? Use a level of significance of 0.05. Why? F) What would your answer be to the question asked in the scenario?\...
Why is it necessary to have a significance threshold when performing the hypothesis tests?
Why is it necessary to have a significance threshold when performing the hypothesis tests?
Why is it necessary to perform the competing nucleophiles reactions under acidic conditions?
Why is it necessary to perform the competing nucleophiles reactions under acidic conditions?
Employers, the military, and colleges use aptitude tests to predict how well someone might perform. Recently,...
Employers, the military, and colleges use aptitude tests to predict how well someone might perform. Recently, critics have said that everyone is more or less the same above a certain level—there isn’t much difference in performance. Now, in the current issue of Psychological Science, the authors of a new study found that this isn’t true. Instead, the higher your score, the better you perform later. The investigation considered four large studies of people who have taken aptitude tests: the College...
After planning the sample, selecting the sample and performing the tests it is necessary to evaluate...
After planning the sample, selecting the sample and performing the tests it is necessary to evaluate the results. This final stage requires the auditor to consider the qualitative aspects of the errors that were found and to project errors to the population and conclude on the audit test. Explain what is involved in these two final steps of sampling.
1.why we often use the t-distribution to perform hypothesis tests rather then the normal distribution? 2.state...
1.why we often use the t-distribution to perform hypothesis tests rather then the normal distribution? 2.state the assumptions of the simple regression model in terms of the individual observations，Yi for i=1 . . . n.
If the right techniques are used, can everyone be motivated to perform well? Why do you...
If the right techniques are used, can everyone be motivated to perform well? Why do you think that?
ANOVA is useful because if you perform multiple t-tests: A. Type I error increases B. The...
ANOVA is useful because if you perform multiple t-tests: A. Type I error increases B. The risk of calculation error becomes unacceptably high C. The risk of a Type II error is greater than 10% D. It is not possible to determine which group(s) differed from one another since t-tests are omnibus tests of all means
Biochemical Tests I and II 1. Identify some major differences between bacteria species. 2. Define selective...
Biochemical Tests I and II 1. Identify some major differences between bacteria species. 2. Define selective and differential media. Know which media we used to belong in each category. 3. For each type of selective media: know what type of bacteria are able to grow on that media. 4. For each type of differential media or test: know which characteristic is being differentiated and how to interpret the results. 5. By comparing known species on selective and differential media, be...
Why can accounting not directly provide us with information necessary to perform cash flow discounting-based valuations?
Why can accounting not directly provide us with information necessary to perform cash flow discounting-based valuations?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT