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B. Assorted Questions/Problems Wherever calculations are involved, show answers with appropriate number of significant figures. Include...
17. lonic compounds dissolve in water through the phenomenon called. A. hydrogenation B. humidification C. hydration...
17. lonic compounds dissolve in water through the phenomenon called. A. hydrogenation B. humidification C. hydration D. hallucination E. homogenization 1. At 27°C and 720 Torr, a certain gas sample has a volume of 765 ml. a. What would be its new volume if the temperature and pressure were changed to 57°C and 792 Torr? Hint: Use Combined Gas Law. b. How many moles are present in that gas sample? Hint: Use Universal Gas Law. 3. Draw structures for (a)...
please answer all, and type please Problems and questions (show all calculations, correct significant figures and...
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
Answer all questions using the correct number of significant figures and correct units. Show all work....
Answer all questions using the correct number of significant figures and correct units. Show all work. (a) Write the balanced molecular and ionic equations, indicating the state of each species in each equation, for the reaction between Mg(s) and HCl(aq): 1. MOLECULAR: TOTAL IONIC: NET IONIC: (b) If 0.050 mol magnesium metal reacts with HCl(aq), how many moles of hydrogen gas are formed? Assume hydrogen to be an ideal gas. 2. Using the definitions for decimeter (dm), centimeter (cm), and...
A 100. L kiln is used for vitrifying ceramics. It is currently operating at 1135 °C....
A 100. L kiln is used for vitrifying ceramics. It is currently operating at 1135 °C. and the pressure is 1.025 atm. How many moles of air molecules are within the confines of the kiln? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) That 1.598 moles Submit Previous Answers X Incorrect; Try Again; One attempt remaining Part D What is the temperature inside the tank? A 200 L gas cylinder has been...
Show your work. Use the correct number of significant figures in your answers. Aluminum metal reacts...
Show your work. Use the correct number of significant figures in your answers. Aluminum metal reacts with chlorine gas to form solid aluminum chloride. 1. Write the balanced equation including states of matter. 2. If 70.0 grams of aluminum reacts with excess chlorine gas, how many grams of aluminum chloride will form? 3. How many grams of chlorine will react completely with 85.6g of aluminum? Sodium hydroxide reacts with sulfuric acid to produce water and sodium sulfate. 4. Write the...
Gas Laws: Show all work, including significant figures and units, leading to your answer. 2. A...
Gas Laws: Show all work, including significant figures and units, leading to your answer. 2. A scientist discovers a filled gas cylinder in an industrial facility, but cannot identify it directly because its labelling has been worn away. She determines that when a sample of 1.90 g of gas is transferred to a container, the gas occupies a volume of 2.30 L at a temperature of 298 K and a pressure of 1.00 atm. [A] How many moles are in...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't forget units. 1. A tank with a volume of o.250 m3 is filled with an ideal gas at an abrsolute pressure of 1.01x105 Pa when the temperature is 20.0 C. a) Use the ideal gas law to calculate the number of moles of gas in the tank. b) The temperature of the gas is then raised to 6 C 2. The mass of one...
Show all working clearly and include diagrams where appropriate. Express all answers to the correct number...
Show all working clearly and include diagrams where appropriate. Express all answers to the correct number of significant figures and units. A storm approaches an office and the air pressure outside suddenly drops from 1.013 kPa to 0.960 kPa. Before the pressure inside the office has time to change, what is the magnitude of the overall force exerted on an external window of the office with dimensions 1.2 m by 1.8 m? Four people, with a combined mass of 320...
only questions number: #3,6,8,16,19,22 Δι CH 122 - Practice Problems for Chapter 12 Do NOT use...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
17. lonic compounds dissolve in water through the phenomenon called. A. hydrogenation B. humidification C. hydration D. hallucination E. homogenization 1. At 27°C and 720 Torr, a certain gas sample has a volume of 765 ml. a. What would be its new volume if the temperature and pressure were changed to 57°C and 792 Torr? Hint: Use Combined Gas Law. b. How many moles are present in that gas sample? Hint: Use Universal Gas Law. 3. Draw structures for (a)...
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
Answer all questions using the correct number of significant figures and correct units. Show all work. (a) Write the balanced molecular and ionic equations, indicating the state of each species in each equation, for the reaction between Mg(s) and HCl(aq): 1. MOLECULAR: TOTAL IONIC: NET IONIC: (b) If 0.050 mol magnesium metal reacts with HCl(aq), how many moles of hydrogen gas are formed? Assume hydrogen to be an ideal gas. 2. Using the definitions for decimeter (dm), centimeter (cm), and...
A 100. L kiln is used for vitrifying ceramics. It is currently operating at 1135 °C. and the pressure is 1.025 atm. How many moles of air molecules are within the confines of the kiln? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) That 1.598 moles Submit Previous Answers X Incorrect; Try Again; One attempt remaining Part D What is the temperature inside the tank? A 200 L gas cylinder has been...
Show your work. Use the correct number of significant figures in your answers. Aluminum metal reacts with chlorine gas to form solid aluminum chloride. 1. Write the balanced equation including states of matter. 2. If 70.0 grams of aluminum reacts with excess chlorine gas, how many grams of aluminum chloride will form? 3. How many grams of chlorine will react completely with 85.6g of aluminum? Sodium hydroxide reacts with sulfuric acid to produce water and sodium sulfate. 4. Write the...
Gas Laws: Show all work, including significant figures and units, leading to your answer. 2. A scientist discovers a filled gas cylinder in an industrial facility, but cannot identify it directly because its labelling has been worn away. She determines that when a sample of 1.90 g of gas is transferred to a container, the gas occupies a volume of 2.30 L at a temperature of 298 K and a pressure of 1.00 atm. [A] How many moles are in...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't forget units. 1. A tank with a volume of o.250 m3 is filled with an ideal gas at an abrsolute pressure of 1.01x105 Pa when the temperature is 20.0 C. a) Use the ideal gas law to calculate the number of moles of gas in the tank. b) The temperature of the gas is then raised to 6 C 2. The mass of one...
Show all working clearly and include diagrams where appropriate. Express all answers to the correct number of significant figures and units. A storm approaches an office and the air pressure outside suddenly drops from 1.013 kPa to 0.960 kPa. Before the pressure inside the office has time to change, what is the magnitude of the overall force exerted on an external window of the office with dimensions 1.2 m by 1.8 m? Four people, with a combined mass of 320...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
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