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Question 5 When 0.0194 moles of KNO3 are dissolved in 0.01802 kg of water, what is...
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of...
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of CaCo3? 20C940.6C12.8016 ASM OB 2.5M OC 1.5M 0,0.5M OE 1M QUESTION 29 A solution was made by dissolving 53.0 g of Na2CO3 in 500.0 mL of water. What is the molarity of this solution? (molarity - moles of solute/liters of solution) 1Na23, 6C12.8016 CA50M OR 2.0M OC 1.5M 0.0.5M OL 1.0M QUESTION 30 If 0.250 mol of NaOH is dissolved in 125.0 mL of...
What is the molality of a solution in which 0.400 moles of sucrose are dissolved in...
What is the molality of a solution in which 0.400 moles of sucrose are dissolved in 4.00 kg of water? O 1.00 m O 2.00 m 0.200 m O 0.100 m
4. If 2.00 moles of a substance is dissolved in 1.00 kg of water, the freezing...
4. If 2.00 moles of a substance is dissolved in 1.00 kg of water, the freezing point of the solu- tion decreases by 7.44°C. Does this substance dissociate to form ions in solution? Explain why. 5. Calculate the freezing point of a 0.2 m CaCl, aqueous solution, assuming it dissociates completely to form ions in solution.
When 4.102 g of KNO3 is dissolved in 39.825 g of water in a "coffee-cup calorimeter"...
When 4.102 g of KNO3 is dissolved in 39.825 g of water in a "coffee-cup calorimeter" at 24 degrees Celsius, the temperature of the solution went down to 19 degrees Celsius. a.) Is this solution reaction exothermic or endothermic? Why? b.) Calcualate qH2O using Eq. 1. c.) Find as it occured in the calorimeter (Eq. 4). d.) Find for the solution of one mole KNO3 in water. e.) Find for the solution of 1.00 g KNO3 in water.
the date you need is: 2.0 grams of KNO3, the temp was 22.1. extra information that might help if you need it: I added 5 mL of water to the 2.0 g of KNO3. please answer the 3 parts of the question. T...
the date you need is: 2.0 grams of KNO3, the temp was
22.1.
extra information that might help if you need it: I added 5 mL
of water to the 2.0 g of KNO3.
please answer the 3 parts of the question. Thanks.
Grams KNO,Cryst. Temp, °c 22.1 2.0 g Type your calculation for solubility (in grams KNO,/100 grams water) using the data for the 2.0 gram sample. Type your calculation for molality of KNO, (in mol KNO3/kg water) using...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
Which of the following solute amounts, when dissolved in 1.00 kg of water, would produce a...
Which of the following solute amounts, when dissolved in 1.00 kg of water, would produce a solution with a freezing point of -1.86 oC? Group of answer choices 2.00 moles of sugar 0.50 moles of KBr 2.00 moles of NaI 1.00 mole of NaCl
Same Question and data but different parts. Please solve for all three. Last attempt left QUESTION...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
want to check 4 5 and 6 (4) KNO; (s) can be dissolved in water. The...
want to check 4 5 and 6
(4) KNO; (s) can be dissolved in water. The dissolution causes the solution temperature decrease. What true about KNO3 (s)? (a) The dissolution is exothermic, and KNO3 (s) can be used as hot pack. (b) The dissolution is endothermic, and KNO3 (s) can be used as hot pack. (c) The dissolution is endothermic, and KNO3 (s) can be used as cold pack. (d) The dissolution is exothermic, and KNO3 (s) can be used...
When 2.0 moles of KCl is dissolved in 1.0 L of water, the boiling point of...
When 2.0 moles of KCl is dissolved in 1.0 L of water, the boiling point of the solution will be ___ than the boiling point of pure water.
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of CaCo3? 20C940.6C12.8016 ASM OB 2.5M OC 1.5M 0,0.5M OE 1M QUESTION 29 A solution was made by dissolving 53.0 g of Na2CO3 in 500.0 mL of water. What is the molarity of this solution? (molarity - moles of solute/liters of solution) 1Na23, 6C12.8016 CA50M OR 2.0M OC 1.5M 0.0.5M OL 1.0M QUESTION 30 If 0.250 mol of NaOH is dissolved in 125.0 mL of...
What is the molality of a solution in which 0.400 moles of sucrose are dissolved in 4.00 kg of water? O 1.00 m O 2.00 m 0.200 m O 0.100 m
4. If 2.00 moles of a substance is dissolved in 1.00 kg of water, the freezing point of the solu- tion decreases by 7.44°C. Does this substance dissociate to form ions in solution? Explain why. 5. Calculate the freezing point of a 0.2 m CaCl, aqueous solution, assuming it dissociates completely to form ions in solution.
the date you need is: 2.0 grams of KNO3, the temp was
22.1.
extra information that might help if you need it: I added 5 mL
of water to the 2.0 g of KNO3.
please answer the 3 parts of the question. Thanks.
Grams KNO,Cryst. Temp, °c 22.1 2.0 g Type your calculation for solubility (in grams KNO,/100 grams water) using the data for the 2.0 gram sample. Type your calculation for molality of KNO, (in mol KNO3/kg water) using...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
want to check 4 5 and 6
(4) KNO; (s) can be dissolved in water. The dissolution causes the solution temperature decrease. What true about KNO3 (s)? (a) The dissolution is exothermic, and KNO3 (s) can be used as hot pack. (b) The dissolution is endothermic, and KNO3 (s) can be used as hot pack. (c) The dissolution is endothermic, and KNO3 (s) can be used as cold pack. (d) The dissolution is exothermic, and KNO3 (s) can be used...
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