A 2-L PET bottle has a mass of 48.5 g. Polyethylene is 13.9 percent hydrogen by...
A 2-L PET bottle has a mass of 48.5 g. Polyethylene is 13.9 percent hydrogen by mass and has an HHV of 42,000 kJ/kg. Find the net energy that might be derived during combustion of one such bottle.
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A 2-L PET bottle has a mass of 48.5 g. Polyethylene is 13.9
percent hydrogen by...
help asap please 6. Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed...
help asap please
6. Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen, and oxygen. If 1.9022 g PET is burned in oxygen it produces 0.6585 g H20 and 4,0216 g CO2. What is the empirical formula of PETY 7. A compound consists of only C and F. It contains 17.39% C by mass. What is the empirical formula of the compound? 8. What is the net ionic equation for the reaction of aqueous...
Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 64...
Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 64 produces 0.3599 g H20 and 2.1977 g CO2, what is the molecular formula of this compound? 3. A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH(aq), what is the molar mass of the acid? 4. The amount of calcium in a 15.0-g sample was determined by converting the...
Please print.) 7. (10 pts) If 0.1800 g of impure soda ash (Na2CO) is titrated with...
Please print.) 7. (10 pts) If 0.1800 g of impure soda ash (Na2CO) is titrated with 15.66 mL of 0.1082 M HCl (see reaction below), Na CO3(aq) + 2 HCl(aq) → 2 NaCl(aq) + H2O(l) + CO2(g) what is the percent purity of the soda ash? (10 pts) Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen. and oxygen. If 1.9022 g PET is burned in oxygen it produces 0.6585 g H20 and 4.0216...
2. Hydrogen combines with oxygen in fuel cells according to the thermochemical equation 2 H2(g) +...
2. Hydrogen combines with oxygen in fuel cells according to the thermochemical equation 2 H2(g) + O2(g) + 2 H2O(g) AH° = -571.7 kJ Suppose that you are working with a firm that is using hydrogen fuel cells to power satellites. The satellite requires 4.0 x 100 kJ of energy during its useful lifetime to stabilize its orbit. Describe how you would determine the mass of hydrogen you would need in your fuel cells for this particular satellite.
please help quick A flask has a mass of 78.23 g when empty and 593.63 g...
please help quick
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the empty flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated H2SO4? Assume water has a density of 0.998 g/mL at the temperature of the measurement. Question 2 3 pts Acetaminophen is a medication used to treat pain and fever and contains Carbon, Hydrogen, Oxygen, and Nitrogen. Combustion analysis...
x H Neutral Line Point A L2 [ f(t) L/2 + A double-clamped polyethylene cantilever has...
x H Neutral Line Point A L2 [ f(t) L/2 + A double-clamped polyethylene cantilever has length L=5X cm and circular cross section H=4mm. An Impulse force f(t) = 1048(t) applied to the beam at point A. The maximum beam deflection Xmax (at point A) can be obtained from the equation Xmax 192E1 where fis the force, E=2GPa and is the cross-section moment of inertia. Assume the material has internal damping property and system damping ratio is 5 = 0.5....
. Hydrogen can be extracted from natural gas according to the reaction CHa(g)+CO2 (8)2 2co(g)+2H2le)L Ko...
. Hydrogen can be extracted from natural gas according to the reaction CHa(g)+CO2 (8)2 2co(g)+2H2le)L Ko 4.4x102 at 825K). An 85.0L reaction container initially contains 22.3 kg of CHa and 55.4 kg of COz at 825 K Assuming ideal gas behavior, calculate the mass of Hz (in g) present in the reaction mixture at the equilibrium. What is the percent yield of the reaction under these conditions?
a) Define i) impulse ii) acceleration b) Differentiate between density and relative density. c) A bottle...
a) Define i) impulse ii) acceleration b) Differentiate between density and relative density. c) A bottle has a mass of 50g when empty and 112g when filled with water. When filled with fluid L, the mass is 90 g. What is the relative density of the liguid,L? d) A student athlete of mass 62 kg participated in 200m race on sports day. During the competition, the student accelerates out of the starting block to a top speed of 14m/s in...
onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent...
onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent sition is as follows, find the empirical and molecular formulas of threonine? C = 40.33%, H = 7.616%, O = 40.29% and N = 11.76% aethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71 % C and 6.23% H. What is the empirical formula of tetraethyllead? A 50.51 g sample of a compound made from iron...
3. A) The density of a metal cube is 45.0 g/L and has a mass of...
3. A) The density of a metal cube is 45.0 g/L and has a mass of 2.55 kg. What is the length of one side of the cube? B) Calculate the following: 4.4 x 10 + 2.22 x 10
help asap please
6. Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen, and oxygen. If 1.9022 g PET is burned in oxygen it produces 0.6585 g H20 and 4,0216 g CO2. What is the empirical formula of PETY 7. A compound consists of only C and F. It contains 17.39% C by mass. What is the empirical formula of the compound? 8. What is the net ionic equation for the reaction of aqueous...
Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 64 produces 0.3599 g H20 and 2.1977 g CO2, what is the molecular formula of this compound? 3. A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH(aq), what is the molar mass of the acid? 4. The amount of calcium in a 15.0-g sample was determined by converting the...
Please print.) 7. (10 pts) If 0.1800 g of impure soda ash (Na2CO) is titrated with 15.66 mL of 0.1082 M HCl (see reaction below), Na CO3(aq) + 2 HCl(aq) → 2 NaCl(aq) + H2O(l) + CO2(g) what is the percent purity of the soda ash? (10 pts) Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen. and oxygen. If 1.9022 g PET is burned in oxygen it produces 0.6585 g H20 and 4.0216...
2. Hydrogen combines with oxygen in fuel cells according to the thermochemical equation 2 H2(g) + O2(g) + 2 H2O(g) AH° = -571.7 kJ Suppose that you are working with a firm that is using hydrogen fuel cells to power satellites. The satellite requires 4.0 x 100 kJ of energy during its useful lifetime to stabilize its orbit. Describe how you would determine the mass of hydrogen you would need in your fuel cells for this particular satellite.
please help quick
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the empty flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated H2SO4? Assume water has a density of 0.998 g/mL at the temperature of the measurement. Question 2 3 pts Acetaminophen is a medication used to treat pain and fever and contains Carbon, Hydrogen, Oxygen, and Nitrogen. Combustion analysis...
x H Neutral Line Point A L2 [ f(t) L/2 + A double-clamped polyethylene cantilever has length L=5X cm and circular cross section H=4mm. An Impulse force f(t) = 1048(t) applied to the beam at point A. The maximum beam deflection Xmax (at point A) can be obtained from the equation Xmax 192E1 where fis the force, E=2GPa and is the cross-section moment of inertia. Assume the material has internal damping property and system damping ratio is 5 = 0.5....
. Hydrogen can be extracted from natural gas according to the reaction CHa(g)+CO2 (8)2 2co(g)+2H2le)L Ko 4.4x102 at 825K). An 85.0L reaction container initially contains 22.3 kg of CHa and 55.4 kg of COz at 825 K Assuming ideal gas behavior, calculate the mass of Hz (in g) present in the reaction mixture at the equilibrium. What is the percent yield of the reaction under these conditions?
onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent sition is as follows, find the empirical and molecular formulas of threonine? C = 40.33%, H = 7.616%, O = 40.29% and N = 11.76% aethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71 % C and 6.23% H. What is the empirical formula of tetraethyllead? A 50.51 g sample of a compound made from iron...
3. A) The density of a metal cube is 45.0 g/L and has a mass of 2.55 kg. What is the length of one side of the cube? B) Calculate the following: 4.4 x 10 + 2.22 x 10
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