Find the amount of phenol red in mirco-grams of unknown 1. The concentration of unknown 1 is 5.5 micromols. The formula weight of phenol red is 376.4 g/mole
Find the amount of phenol red in mirco-grams of unknown 1. The concentration of unknown 1...
You will be inoculating the Phenol Red tests from a master inoculum of LB broth and your unknown bacteria using a 1:100 dilution. The final volume of the Phenol Red test (with sugar added) is 10 ml. How much master inoculum will you add in mL and uL?
1-How many grams of P2O5 are required to supply 46.5 grams of phosphorus? 2-What is the empirical formula weight of Na2S2O8? 3-When 5.00 grams of copper is burned with sulfur, it gives a product that weighs 6.26 grams. What is the formula of copper sulfide CuxSy ? 3-A compound of carbon and hydrogen has 85.7% C and 14.3% H. The molecular weight of the compound is 70.0 g/mol. Determine the molecular formula of the compound. 4-What is the empirical formula...
I have a mixture of E. coli, L. Broth, ampicillin, and phenol red. I want to measure the concentration of E. coliusing a spectrophotometer. What do I blank the spec with? (Select all that apply.) A) Ampicillin B) E. coli C) Ethanol D) L. Broth E) NaCl ions F) Penicillin G) phenol red H) Water Also please include just a short explanation, thank you!!
1. determine the molar mass of aluminum perchlorate in units of grams per mole. 2. what is the mass (in grams) of 3.25 moles of elemental nitrogen? 3. how many molecules are found in 18.0 g of carbon dioxide? 4. A 170.00 g sample of an unknown compound want to UC Davis for elemental analysis. The results stated the unknown common consist of 29.84% sodium, 67.49% chromium, and 72.67% oxygen. Find the Paracle formula of this identified compound.
Question 1 (1 point) An unknown organism was inoculated into a phenol red tub and produce a yellow coloration. The same organism was inoculated into a purple broth tube resulted in growth after the incubation period. Green slant tubes were also inoculated and resulted in a blue coloration. However, this organism was negative for motility within a SIM tube. Which of the following is the unknown species? Salmonella typhimurium Shigella sonnei Enterobacter aerogenes Klebsiella pneumoniae Escherchia coli O Proteus mirabilis...
what is the concentration of the CO3 anion in grams per liter of an unknown solution of a 10 mL aliquot yields 0.8352g of calcium carbonate
9. Find the pH and the concentration in the following solutions. Also, determin a. 0.0045M phenol solution concentration of all species (H+, OH, and HA/B or A/BH) s. Also, determine the % dissociation. b. 0.0052M ammonia solution
1. The empirical formula of an unknown substance is HSO4. If the molecular weight of the substance 194 glmol, what is its molecular formula? 2. How many grams of ammonia are produced when 32g of nitrogen react with excess hydrogen? N2 3H23 2NH, 3. The empirical formula of an unknown substance is determined to be CH2. What is its molecular formula if the molecular weight is 84 gmole? 4. Nicotine has an empirical formula of CsHTN and a molecular weight...
1. a)The hydronium ion concentration of an aqueous solution of 0.56 M phenol (a weak acid), C6H5OH, is [H3O+] = ? M b)The hydronium ion concentration of an aqueous solution of 0.558 M pyridine (a weak base with the formula C5H5N) is [H3O+] = ? M. 2. a)The pOH of an aqueous solution of 0.445 M acetylsalicylic acid (aspirin), HC9H7O4, is .? b)The pH of an aqueous solution of 0.517 M aniline (a weak base with the formula C6H5NH2) is ?....
A 1.802 gram sample of unknown compound contains 0.721 grams of carbon, 0.121 grams of hydrogen and 0.960 grams of oxygen. The compound has a molar mass of 180.2 g/mol. Determine the empirical formula of the compound and the molecular formula. Show all work.