Biology, 05.07.2019 14:00, onlylee

An experiment measures the breaking point of identical strips of woodgate from different trees. the procedure must contain which of the following instruction?

Answers: 1

Show answers

Similar questions

Chemistry, 07.07.2019 19:30, jadejordan8888

Astudent is writing his procedure for his science fair project. his teacher reminded him that his experiment should include repetition and should be replicable. here is the procedure he came up with to determine which brand of diaper is the most absorbent: 1) purchase 5 different brands of diapers and measure their weight. 2) have baby sister wear each diaper for 1 hour. 3) measure the weight of the diaper after 1 hour to see how much liquid it absorbed. 4) do the experiment again every day for a week. 1) q: a: does the student's proposed procedure include repetition? why or why not? a) yes, the experiment includes repetition because the student tests 5 different brands of diapers. b) yes, the experiment includes repetition because the student performs the experiment multiple times. c) no, the experiment does not include repetition because the student only tests the diapers on his sister and not any other babies. d) no, the experiment does not include repetition because the student only has the baby wear the diaper for 1 hour at a time instead of repeating the experiment with different time periods. 2) is the student's experiment replicable? why or why not? a) yes, the student's experiment is replicable since he performed the experiment a total of 7 times. b) yes, the student's experiment is replicable because any other student could easily follow his procedure. c) no, the student's procedure is not replicable because it is too complicated for someone else to repeat it. he should have limited it to one brand of diaper and only done the experiment for one or two days. d) no, the student's procedure is not replicable because it depends on too many outside factors that can't be controlled, such as how much his sister had to drink or if she even went to the bathroom during the one hour.

Answers: 1

continue

Biology, 09.07.2019 23:00, peytonwilson2003

Which situation suggests that an experiment has reliable results? a. the experiment uses a very simple procedure. b. the experiment can be repeated with the same outcome. c. the experiment generates ideas for new experiments. d. the experiment supports the hypothesis.

Answers: 2

continue

Chemistry, 27.08.2019 04:10, ethangorrell67

Use the below data that i obtained from my lab and kindly with questions 2-5 and the observations/conclusion/interpretation of results .the aim of this experiment is to identify the defining characteristics of acids and bases, to define acidity and explain how the ph scale relates to the acidity of a substance, to distinguish between strong and weak acids in relationship to the acid ionization constant (ka), and to discuss the purpose of a ph titration curve and define the half-equivalence point and equivalence point. in so doing, we will perform ph analysis utilizing ph indicator strips, perform a titration of a weak acid against a strong base, construct an accurate titration curve using experimental results, and determine ka for an unknown weak acid utilizing the data collected during the experiment.resultsexperimental data (these can also be organized in a table or graph): calculations: experiment 1data table 1: determination of equivalence pointtrial 1trial 2volume of unknown weak acid 4 ml4 mltotal number of drops required to reach equivalence point 110110average number of drops 110data table 2: titration curve valuesdrops naoh added ph value trial 1 ph value trial 2 ph value (average)half-equivalent point equivalent point 11011011004441066620666306664066650007778088890888100101010110101010120101010panel 1: equivalent point number of drops46 drops of naohpanel 2: half-equivalent point number of drops93 drops of naohdata table 3: determination of unknownpka of unknown weak acid: 6.0ka of unknown weak acid: 10-6unknown weak acid identity: carbonic acid (h2co3% error pka: 5.81%% error ka: 132.56%ph vs drop of naoh curve 12 r 10 0 0 20 40 60 80 100 120 140 drops of naohph indicator strips work by changing color in the presence of solutions with varied ph values. thinking about your procedure steps and results in part 1, why do you think the ph of the unknown weak acid was not determined with ph indicator strips until part 2? discuss possible causes of error in the experimental procedure. why do you think there was a percent of error in the pka and ka values of the unknown weak acid, in comparison to the values presented in table 2? do you think using a ph meter instead of ph indicator strips would have created a larger or smaller percent error? explain your answer.5. why was phenolphthalein a good indicator to use for determining the equivalence point between the unknown weak acid and strong base? observations and conclusions:

Answers: 3

continue

Physics, 30.08.2019 05:30, nyce36

An experiment measures the breaking point of identical strips of wood made from different trees. the procedure must contain which of the following instructions?

Answers: 1

continue

Do you know the correct answer?

An experiment measures the breaking point of identical strips of woodgate from different trees. the...

Questions in other subjects:

Social Studies, 09.04.2021 03:00

Why was the student government created?...

Mathematics, 09.04.2021 03:00

Please help! Find the error & explain why it is wrong: Jon wanted to solve this problem The number of visitors to a website is the first week is 40. The vi...

Mathematics, 09.04.2021 03:00

What is the base of 12^4...

Mathematics, 09.04.2021 03:00

Can someone message me I need help ASAP by tmr...

Mathematics, 09.04.2021 03:00

Please help me with this question ...

Engineering, 09.04.2021 03:00

In your own words, using a bullet point format briefly answer the following: (a) Three strengthening mechanisms for metals and alloys are discussed in Chapter 8, (i. e. grain size...

Business, 09.04.2021 03:00

You expect to receive a payout from a trust fund in 3 years. The payout will be for $10,200. You plan to invest the money at an annual rate of 6.2 percent until the account is wort...

Business, 09.04.2021 03:00

Bella Donna Company has 100,000 shares of $2 par common stock issued and outstanding as of January 1, 2018. The shares were originally issued for $8 per share. On February 3, 2018,...

History, 09.04.2021 03:00

How were African Americans denied their rights during reconstruction...

Mathematics, 09.04.2021 03:00

Among the most famous of all meteor showers are the Perseids, which occur each year in early August. In some areas the frequency of visible Perseids can be as high as 40 per hour....

Other tasks in the category: Biology More task