Answer the below questions and show steps: a. You have a 50X stock of buffer and you need 150 µl of 1X. How do you make this?  b. You have a DNA solution that is 21.3 µg/µl and you want 75 µl that is 50 ng/µl. How do you make this?

Which of the following are first aid measures for glacial acetic acid? Select one: a. If swallowed, rinse mouth with water (unless the affected person is unconscious). Consult a physician.  b. If in contact with the eyes, flush eyes with water for 15 minutes. Consult a physician and continue to wash eyes with water during transport to the hospital. c. If in contact with the skin, remove contaminated clothing and wash affected area with soap and water for at least 15 minutes. Consult a physician.  d. All options are correct. e. If inhaled, move the affected person to fresh air and give artificial respiration if they are not breathing. Consult a physician.

#17 on the picture (about alkalosis of a protein)

If a base, such as sodium hydroxide (NaOH) were added to milk, would the protein precipitate? Why or why not?

Student are adding 10 drops of 1M HCI to 10 drops of 1M NaOH to show neutralization. The results of two students are below. Test Results Group A Group B - ... SI Red Litmus Red Red Blue Litmus Blue Red рH раper 7. phenolphthalein clear clear Which group's results are incorrect and what mistake did they most likely make? dentify e a) Group B is incorrect and they most likely added too much acid. try ... the strong ac b) Group B is incorrect and they most likely added too little acid. c) Group A is incorrect and they most likely added too little acid. 11:48 AM 4/23/2021 Insert Delete PrtSc F11 F12 F9 F10 Backspace Num Lock 8 7 8 PgUp Home 4. Enter 6 K 1 Shift 2 + || * C0

A 0.512 g sample of CaCO3 is dissolved in 12 M HCl and the mixture is diluted to 250 mL. How many moles of CaCO3 are used? What is the [Ca2+] in the 250 mL solution? How many moles of Ca2+ are in a 25 mL sample of the 250 mL solution?

I'm having some trouble on my homework and could really use some help See attached:

Explain each step please

17. During alkalosis of a protein, shown below, salt bridges are broken, resulting in denaturation. Which choice shows the products of alkalosis? Н alkalosis H-N NO salt bridge Он Н Н H-N H-N- Но. Н d. a. Н Н H-N b. Н Н e. H-N- но Н c. IIZ:

please help double checking the answers of the following question. Some of the answers I have put may be incorrect