Hi I am working on my chemistry homework about acids and bases and I am confused on this question from a lab. We used grape juice and cranberry juice and we had to put HCl and NaOH in the test tube full of juice.

1. Referring back to procedure 1 of the experiment, which of the two juices is more useful as a general pH indicator and why? I think it is grape juice but I just don't know what to back my answer with. I appreciate the help!

1)Determine the pH of each solution.

Part A

0.20 M KCHO2

Express your answer to two decimal places.

Part B

0.21 M CH3NH3I

Express your answer to two decimal places.

Part C

0.22 M KI

Express your answer to two decimal places.

2)

Part A

Rank the following compounds in order of decreasing acid strength using periodic trends.

Rank the acids from strongest to weakest. To rank items as equivalent, overlap them.

LiH, H2O, HCl, HBr

Over the next week, we will be discussing the structure of macromolecules, extremely large molecules the masses of which can exceed 100,000 daltons. One such macromolecule is deoxyribonucleic acid (DNA). There are few discoveries in the history of science that have had as profound an effect on our understanding of how life “works” than the elucidation of the structure of DNA by Watson and Crick. For this unit’s forum, I have assigned the original Nature paper by James Watson and Francis Crick on the Molecular Structure of Nucleic Acids. Please read the paper and answer the following questions.

https://www.nature.com/scitable/content/molecular-structure-of-nucleic-acids-a-structure-13997975

1.       What are the two most significant differences between the structure for DNA as proposed by Watson and Crick and that proposed by Pauling and Corey?

2.       What important structural function do the purine and pyrimidine bases play? Besides the constraints on hydrogen bonding, what other reason must a purine pair with a pyrimidine in the structure proposed by Watson and Crick? (Hint: Look at the crude diagram of DNA presented in the paper.)

3.       In the penultimate paragraph of their paper, the authors state that their proposed base pairing scheme suggests a possible copying mechanism for DNA. Propose a mechanism for DNA copying based on the information provided in the paper.  

4.       Pairing of bases involves hydrogen bonding (see paragraph 6). What do you think would be the consequence if instead of hydrogen bonding, the bases were held together by covalent bonds?

In a world where humans lived in comfort and lived up to 100 years then died in their sleep, after 100 years of this kind of world would human populations no longer evolve? in your answer reference, darwins postulated mechanisms for evolution by natural selection. what would it mean to say that human populations stopped evolving? And could we use the Hardy Weinberg Analysis in this context?

2. Describe the evidence, from both animal and human studies, that the endocannabinoids are involved in the extinction of learned fear responses. For this question, please do exactly that, provide one example from the research that is out there (not only from the book as again I want you to look to other literature for supporting this) regarding one human paradigm and one animal paradigm which supports this response.

Human resources is essential for more than processing payroll or handling benefits enrollment for employees. HR plays a key part in developing an organization's strategy as well as handling the employee activities at the company.

Think about your needs that were met by the human resource department.

How has your HR department assisted you?

What essentials are provided by your HR department?

Now you want to study the protein product of this mutant brat gene, and you want to introduce this human brat gene into a bacterial expression vector (one that can be expressed to make a protein in bacterial cells) in hopes of producing a large amount of the human mutant Brat protein. Should you use the genomic DNA or the cDNA version of this gene? Explain your reasoning.

Human Resources. Research paper.topic is Performance multiplier.

Designing/Analyzing Jobs Review current job descriptions and update them (this may be suitable if your current job descriptions are outdated, or if you know this is something that needs to be done) Human Resources Planning Evaluate available vendor HRIS systems and prepare recommendations for your organization Succession planning for your organization Recruitment/Selection