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to another question will save this response. 6 points is the molar mass of 3.7 g...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol-1 k-19
a. What is the molecular weight of 3.7 g of an unknown gas that occupies 450...
a. What is the molecular weight of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R 0.0821 L atm mol K-1 b. Aluminum and oxygen react to form aluminum oxide. How many L of oxygen at 296 K and 1.4 atm of pressure are necessary to form 3.25 g of aluminum oxide?
omposition: C = 24.78%; H = 2.08 en and chlorine had the following composition: C =...
omposition: C = 24.78%; H = 2.08 en and chlorine had the following composition: C = 24.78% % and Cl = 73.14%. A 1.26 g sample of this gas occupies a volume of 292 mL at STP. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points) show all setup & work answer: molar mass = What...
The mass of an evacuated 250 mL flask is 143.237 g . The mass of the...
The mass of an evacuated 250 mL flask is 143.237 g . The mass of the flask filled with 277 torr of an unknown gas at 25 ∘C is 144.317 g . Calculate the molar mass of the unknown gas. show your work..
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H...
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H = 2.08 % and Cl = 73.14 %. A 1.26 g sample of this gas occupies a volume of 435 ml. at a pressure of 0.736 atm and temperature of 27°C. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points)...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78% = 2.08 and Cl = 75.14%. A 1.26 g sample of this gas occupies a volume of 435 ml at a pressure of 0.736 atm and temperature of 270C. a) What is the empirical formula of the unknown gas (3 points) show. all setup & work Answer: empirical formula = b) What is the molar mass of the unknow...
Question 6 of 11 Moving to another will save this response Question 6 & points The...
Question 6 of 11 Moving to another will save this response Question 6 & points The operation and maintenance costs of a factory is estimated to be AED 8,000 for the first 4 years, and expected to increase by AED 1,250 per year thereafter. Using an interest rate of 7% and study period of 12 years, select the closest correct answers for the below questions from the answer's options provided below: • What is the present worth of base amount?...
Moving to another question will save this response Question of estion 6 20 points The microstructure...
Moving to another question will save this response Question of estion 6 20 points The microstructure of a comper silver alloy at 775°C (1425) costs of primary and eutectic structures. If the mass fractions of these two microcons are 0.10 and 0.70, respectively, determine the composition of the alloy (wig) Compositions Moving to another question will save this response. Question 6 The microstructure of a copper-silver alloy at 775°C (1425°F) consists of primary a and eutectic structures. If the mass...
QUESTION 1 1 points Save Answer The evaporation of ethanol (molar mass = 46.07 g/mol) involves...
QUESTION 1 1 points Save Answer The evaporation of ethanol (molar mass = 46.07 g/mol) involves an enthalpy change of 0.918 kJ/g. What is the molar enthalpy of vaporization of ethanol? 0 -0.0369 kJ/mol +37.8 kJ/mol O-42.3 kJ/mol O +1.18 kJ/mol O 12.2.1.1.al Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
A solution made by dissolving 85.0 g f sucrose (Molar mass. 342.3 g/mol) in 515 go...
A solution made by dissolving 85.0 g f sucrose (Molar mass. 342.3 g/mol) in 515 go acetic acid at 25 degree C froze at 14.95degreeC. Freezing point of the pure acetic acid is 16.90degreeC.Density of acetic acid is 1.05 g/ml. at 25 degree C. Answer the following and show your work in the space provided. Molality of sucrose solution = K_i of acetic acid = 93.42 g of an unknown non-volatile, non-electrolyte solute was dissolved in 850.g of acetic acid....
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol-1 k-19
omposition: C = 24.78%; H = 2.08 en and chlorine had the following composition: C = 24.78% % and Cl = 73.14%. A 1.26 g sample of this gas occupies a volume of 292 mL at STP. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points) show all setup & work answer: molar mass = What...
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H = 2.08 % and Cl = 73.14 %. A 1.26 g sample of this gas occupies a volume of 435 ml. at a pressure of 0.736 atm and temperature of 27°C. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points)...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78% = 2.08 and Cl = 75.14%. A 1.26 g sample of this gas occupies a volume of 435 ml at a pressure of 0.736 atm and temperature of 270C. a) What is the empirical formula of the unknown gas (3 points) show. all setup & work Answer: empirical formula = b) What is the molar mass of the unknow...
Question 6 of 11 Moving to another will save this response Question 6 & points The operation and maintenance costs of a factory is estimated to be AED 8,000 for the first 4 years, and expected to increase by AED 1,250 per year thereafter. Using an interest rate of 7% and study period of 12 years, select the closest correct answers for the below questions from the answer's options provided below: • What is the present worth of base amount?...
Moving to another question will save this response Question of estion 6 20 points The microstructure of a comper silver alloy at 775°C (1425) costs of primary and eutectic structures. If the mass fractions of these two microcons are 0.10 and 0.70, respectively, determine the composition of the alloy (wig) Compositions Moving to another question will save this response. Question 6 The microstructure of a copper-silver alloy at 775°C (1425°F) consists of primary a and eutectic structures. If the mass...
QUESTION 1 1 points Save Answer The evaporation of ethanol (molar mass = 46.07 g/mol) involves an enthalpy change of 0.918 kJ/g. What is the molar enthalpy of vaporization of ethanol? 0 -0.0369 kJ/mol +37.8 kJ/mol O-42.3 kJ/mol O +1.18 kJ/mol O 12.2.1.1.al Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
A solution made by dissolving 85.0 g f sucrose (Molar mass. 342.3 g/mol) in 515 go acetic acid at 25 degree C froze at 14.95degreeC. Freezing point of the pure acetic acid is 16.90degreeC.Density of acetic acid is 1.05 g/ml. at 25 degree C. Answer the following and show your work in the space provided. Molality of sucrose solution = K_i of acetic acid = 93.42 g of an unknown non-volatile, non-electrolyte solute was dissolved in 850.g of acetic acid....
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