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10. What volume of 14N H2SO4 is needed to make 500 mL of...
What volume of 4.05 M NaCl is needed to make 500 mL of 0.300 M NaCl...
What volume of 4.05 M NaCl is needed to make 500 mL of 0.300 M NaCl solution? _____ mL (Report your answer with correct sig figs in units of mL)
You have a stock solution that contains 24 mg/ml of protein. You want to make a...
You have a stock solution that contains 24 mg/ml of protein. You want to make a set of standards with the following concentrations: 12 mg/ml, 6 mg/ml, 3 mg/ml and 1.5 mg/ml. You need a minimum of 500 ul of each standard after all dilutions are completed. Using the technique of serial dilution, explain how you would make your standards by filling in the chart below. Std 1 Std 2 Std 3 Std 4 concentration (mg/ml) 12 6 3...
1. A 19.6 gram sample of KCl is used to make a 275. mL KCl solution....
1. A 19.6 gram sample of KCl is used to make a 275. mL KCl solution. What is the molarity of the KCl solution? 2. A chemist has a bottle containing 0.25 M CuCl2. How many milliliters of this solution should the chemist use to add 12.0 grams of CuCl2 to her reaction? 3. In a saturated solution of the ionic compound sodium sulfate, Na3PO4 all of the water molecules are involved in the hydration process. some solid Na3PO4 is...
1.) An isotope has 9 protons and 10 neutrons. The isotope has a charge of -1. How...
1.) An isotope has 9 protons and 10 neutrons. The isotope has a charge of -1. How many electrons does this isotope have? 2.) An atom called X is bonded to another atom by a triple bond. What is the maximum number of additional atoms that can be bonded to X and still conform to the octet rule? 3.) One tablet of Tums antacid contains 500.0 mg of calcium carbonate. When calcium carbonate reacts with hydrochloric acid (from gastric juices), carbon dioxide gas,...
please help me answer the questions with the provided data. Data Table for Part 4 s-soluble,...
please help me answer the questions with the provided
data.
Data Table for Part 4 s-soluble, ss-slightly soluble, i-insoluble mass of beaker 205.354 mass of beaker + 10.0mL. NaCI 1A 56 Water Oil Type of particle(s) present (molecule, ion, both) Polarity of solute L NaCI 1a 563 g CuSO mass of beaker + dry NaCl mass of solution mass of solute (NaC1) sucrose ar vegetable oils 11.609 g vinegar 3-268 Part 2 S-strong electrolyte, W-weak electrolyte, N- non-clectrolyte 1. Calculate...
Please answer and explain all! Thank you! You have a 250.-mL sample of 1.250 M acetic...
Please answer and explain all! Thank you!
You have a 250.-mL sample of 1.250 M acetic acid (K_a = 1.8 times 10^-5). Assuming no volume change, how much NaOH must be added to make the best buffer? A) 6.25 g B) 12.5 g C) 16.3 g D) 21.3 g E) none of these A solution contains 0.500 M HA (K_a = 1.0 times 10^-8) and 0.432 M NaA. What is the [H^+] after 0.10 mole of HCl is added to...
What is the purpose of the acid added in the beginning of the experiment? CHM3120C Analytical...
What is the purpose of the acid added in the beginning of the
experiment?
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mole's Salt with e-Phenanthroline Required Reagents and Supplies 50 mL of 0.0005 -0.0006 M of Moher's solution unknown. 10 of Hydroxylamine hydrochloride (NH2OH, HCT, 500 ml of phenantholine solution contains 05 of-phenanthroine monohydrate). 83 g of sodium acetate (NOAC3H20) in 500 ml of water (for 1.2 M of phl 5 buffer som minimum 3 of...
Can you answer question 4 & 5? The experiment and porcedure is posted below Question 4...
Can
you answer question 4 & 5? The experiment and porcedure is
posted below
Question 4 & 5
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid b. Oxalic acid c. CaCO3 d. KHP A solution that may contain NaOH, Na 2CO3, and NaHCO3, alone or in compatible combination was titrated with 0.1200 M HCl. The volume of the acid required to reach the phenolphthalein endpoint was 25.67 mL while 38.13 mL to reach the methyl red endpoint. What are the components of the mixture? a. Na2CO3 only b. NaOH only...
Please correct all questions because i did them wrong MATCHINGEnter the letter that best describes the...
Please correct all questions because i did them wrong
MATCHINGEnter the letter that best describes the reagent in the lefthand box below (12 Points) Answer G2 Buffer Proteinase K C1 Buffer Trypsin PBS VA. disrupts outer cell membrane of 3T3 fibroblasts B. phosphate buffered saline C. used to equilibrate Oiagen Genomic tip column D. precipitates DNA Eendonuclease, double stranded cleavage F. used to wash Qiagen Genomic tip column G. enzyme used to release 313 cells from culture task H. disrupts...
please help me answer the questions with the provided
data.
Data Table for Part 4 s-soluble, ss-slightly soluble, i-insoluble mass of beaker 205.354 mass of beaker + 10.0mL. NaCI 1A 56 Water Oil Type of particle(s) present (molecule, ion, both) Polarity of solute L NaCI 1a 563 g CuSO mass of beaker + dry NaCl mass of solution mass of solute (NaC1) sucrose ar vegetable oils 11.609 g vinegar 3-268 Part 2 S-strong electrolyte, W-weak electrolyte, N- non-clectrolyte 1. Calculate...
Please answer and explain all! Thank you!
You have a 250.-mL sample of 1.250 M acetic acid (K_a = 1.8 times 10^-5). Assuming no volume change, how much NaOH must be added to make the best buffer? A) 6.25 g B) 12.5 g C) 16.3 g D) 21.3 g E) none of these A solution contains 0.500 M HA (K_a = 1.0 times 10^-8) and 0.432 M NaA. What is the [H^+] after 0.10 mole of HCl is added to...
What is the purpose of the acid added in the beginning of the
experiment?
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mole's Salt with e-Phenanthroline Required Reagents and Supplies 50 mL of 0.0005 -0.0006 M of Moher's solution unknown. 10 of Hydroxylamine hydrochloride (NH2OH, HCT, 500 ml of phenantholine solution contains 05 of-phenanthroine monohydrate). 83 g of sodium acetate (NOAC3H20) in 500 ml of water (for 1.2 M of phl 5 buffer som minimum 3 of...
Can
you answer question 4 & 5? The experiment and porcedure is
posted below
Question 4 & 5
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...
Please correct all questions because i did them wrong
MATCHINGEnter the letter that best describes the reagent in the lefthand box below (12 Points) Answer G2 Buffer Proteinase K C1 Buffer Trypsin PBS VA. disrupts outer cell membrane of 3T3 fibroblasts B. phosphate buffered saline C. used to equilibrate Oiagen Genomic tip column D. precipitates DNA Eendonuclease, double stranded cleavage F. used to wash Qiagen Genomic tip column G. enzyme used to release 313 cells from culture task H. disrupts...
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