A student prepared a stock solution by dissolving 5.00 g of KOH in enough water to make 150. mL...
A student prepared a stock solution by dissolving 5.00 g of KOH in enough water to make 150. mL of solution. She then took 15.0 mL of the stock solution and diluted itwith enough water to make water to make 65.0 mL of a final solution. What is the concentration of KOH for the final solution?
A) 0.137 M
B) 7.30 M
C)5.61 M
D) 0.178 M
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A student prepared a stock solution by dissolving 5.00 g of KOH in enough water to make 150. mL...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150. mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with enough water to make 250. mL of a working solution. A. What is the molar concentration of NaOH in the stock solution? B. What is the molar concentration of NaOH in the working solution? C. How much of the working solution will she...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150. mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with enough water to make 250. mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? B. What is the molar concentration of NaOH in the working solution? C. How much of the working...
29,31,32 please 29) A student prepared a stock solution by dissolving 15.0 g of KOH in...
29,31,32 please
29) A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150 mL of solution. She then took 15.0 mL of the stock solution and diluted it with enough water to make water to make 65.0 mL of a final solution. What is the concentration of KOH for the final solution? A) O. 411 M B) 0.534 M C) 1.87 M D) 2.43 M 30) The mixing of which pair of...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with enough water to make 250. mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? # of moles x 1000 Naot mass= 15,09 g molanty volume of source (m) Mol 40 g/mol voline...
3. Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution...
3. Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 x 1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) H2(g) + FeCl2(aq) 4. A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150 mL of solution. The student then took 15.0 mL of the stock solution and diluted it with enough water to make water to make 65.0...
mem%20210%20FINAL%20EXAM%20(SU20)%20.pdf Imported From Sa.. 2. A student prepared a stock solution by dissolving 15.0 g of...
mem%20210%20FINAL%20EXAM%20(SU20)%20.pdf Imported From Sa.. 2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 ml of the stock solution and diluted it with enough water to make 250 mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? B. What is the molar concentration of NaOH in the working solution? C. How...
2. If the percent yield for the following reaction is 75.0%, and 25.0 g of NO2 are consumed in the reaction, how m...
2. If the percent yield for the following reaction is 75.0%, and 25.0 g of NO2 are consumed in the reaction, how many grams of nitric acid, HNO3(aq) are produced? 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) 4. A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150. mL of solution. The student then took 15.0 mL of the stock solution and diluted it with enough water to make water...
27) What is the concentration (molarity) of HCI in the final solution when 65 mL of...
27) What is the concentration (molarity) of HCI in the final solution when 65 mL of a 9.0 M HCl solution is diluted with pure water to a total volume of 0.15 L? 28) How many milliliters of a 9.0 M H2SO4 solution are needed to make 0. 45 L of a 3.5 M solution? A) 0. 18 mL B) 1.2 mL C) 180 mL D) 1200 mL 29) A student prepared a stock solution by dissolving 15.0 g of...
how much is a working solution will she need to neutralize 10.5 ML of 0.250MH3 PO...
how much is a working solution will she need to neutralize
10.5 ML of 0.250MH3 PO four
Please answer C and show steps.
Thank you!
C. How much of the working solution will she need to neutralize 10.5 mL of 0.250 M H3PO4? 2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with...
Solution A is prepared by dissolving 89.4 g of Na3PO4 in enough water to make 1.50...
Solution A is prepared by dissolving 89.4 g of Na3PO4 in enough water to make 1.50 L of solution. Solution B is 2.5 L of 0.696 M Na2SO4. a) What is the molar concentration of Na3PO4 in Solution A? 0.36 M b) How many millilitres of Solution A will give 2.50 g of Na3PO4? 41.95 mL c) A 50.0 mL sample of Solution B is mixed with a 75.00 mL sample of Solution A. Calculate the concentration of Na+ ions...
29,31,32 please
29) A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150 mL of solution. She then took 15.0 mL of the stock solution and diluted it with enough water to make water to make 65.0 mL of a final solution. What is the concentration of KOH for the final solution? A) O. 411 M B) 0.534 M C) 1.87 M D) 2.43 M 30) The mixing of which pair of...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with enough water to make 250. mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? # of moles x 1000 Naot mass= 15,09 g molanty volume of source (m) Mol 40 g/mol voline...
3. Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 x 1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) H2(g) + FeCl2(aq) 4. A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150 mL of solution. The student then took 15.0 mL of the stock solution and diluted it with enough water to make water to make 65.0...
mem%20210%20FINAL%20EXAM%20(SU20)%20.pdf Imported From Sa.. 2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 ml of the stock solution and diluted it with enough water to make 250 mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? B. What is the molar concentration of NaOH in the working solution? C. How...
2. If the percent yield for the following reaction is 75.0%, and 25.0 g of NO2 are consumed in the reaction, how many grams of nitric acid, HNO3(aq) are produced? 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) 4. A student prepared a stock solution by dissolving 15.0 g of KOH in enough water to make 150. mL of solution. The student then took 15.0 mL of the stock solution and diluted it with enough water to make water...
27) What is the concentration (molarity) of HCI in the final solution when 65 mL of a 9.0 M HCl solution is diluted with pure water to a total volume of 0.15 L? 28) How many milliliters of a 9.0 M H2SO4 solution are needed to make 0. 45 L of a 3.5 M solution? A) 0. 18 mL B) 1.2 mL C) 180 mL D) 1200 mL 29) A student prepared a stock solution by dissolving 15.0 g of...
how much is a working solution will she need to neutralize
10.5 ML of 0.250MH3 PO four
Please answer C and show steps.
Thank you!
C. How much of the working solution will she need to neutralize 10.5 mL of 0.250 M H3PO4? 2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with...
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