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The following problems are to submitted. The due date will be announced in class. 1( 16...
The following problems are to submitted. The aue une wil U ITUUU HII Noni 1.( 16...
The following problems are to submitted. The aue une wil U ITUUU HII Noni 1.( 16 pts) (a) If 913 J of heat are transferred into the system, and the system does 157 J of work, compute the change in the internal energy, and interpret the sign of your result. (b) Meals-Ready-to-eat (MREs) are military meals that can be heated on a flameless heater via the reaction Mg(s) + 2 H2O(l) ---> Mg(OH),(s) + 2 H2(g) (i) Calculate A H98.ro...
(a) If 913 J of heat are transferred into the system, and the system does 157 J of work, compute the change in the inter...
(a) If 913 J of heat are transferred into the system, and the system does 157 J of work, compute the change in the internal energy, and interpret the sign of your result. (b) Meals-Ready-to-eat (MREs) are military meals that can be heated on a flameless heater via the reaction Mg(s) + 2 H2O(l) --- > Mg(OH)2(s) + 2 H2(g) (i) Calculate ∆Hº298,rxn (ii) Calculate the number of grams of Mg(s) needed for this reaction to...
[8 marks] 1. The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater....
[8 marks] 1. The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. The source of the heat energy is the reaction shown below: Mg(s) + 2 H2O(1) ► Mg(OH)2() + H2(g) Mg(OH)2(s) H2O(1) Mg(s) H2(g) AHºr (kJ/mol) -924.54 -285.83 0 0 b) How much heat (9), in J, is released when 4.25 g of Mg is reacted according to the equation above?
The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase...
The meals-ready-to-eat (MREs) in the military can be heated on a
flameless heater. You can purchase a similar product called “Heater
Meals”. Just pour water into the heater unit, wait a few minutes,
and you have a hot meal. The source of energy in the heater is the
exothermic reaction of magnesium with water:
Mg(s) + 2 H2O(ℓ) → Mg(OH)2(s) +
H2(g)
ΔHf° (kJ/mol)
Mg(s)
0
Mg(OH)2(s)
–924.5
H2O(ℓ)
–285.8
H2(g) ...
Question 13 4 pts The meals-ready-to-eat (MREs) in the military can be heated on a flameless...
Question 13 4 pts The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals”. Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2O(l) + Mg(OH)2(s) + H2(g) AH° (kJ/mol) Mg(s) 0 Mg(OH)2(s) -924.5 H2011) -285.8 H2(g) 0 Calculate the mass, ing,...
Needing help with chemistry please 2. Meals, Ready-to-Eat (MREs) are military meals that can be heated...
Needing help with chemistry please
2. Meals, Ready-to-Eat (MREs) are military meals that can be heated on a flame-less heater. The heat is produced by the following reaction: Mg(s) + 2H2O(l) ? Mg(OH)2(s) + H2(g) a. Calculate the standard enthalpy change (???xn) for the reaction. Calculate the mass of Mg (in g) needed for this reaction to release enough energy to increase the temperature of 25 mL of water from 15°C to 85 C. The density of water is 1.00...
7.71 Ready-to-eat meals used by military personnel and campers can be heated on a flameless heater....
7.71 Ready-to-eat meals used by military personnel and campers can be heated on a flameless heater. The source of energy in the heater is the reaction repre- sented by Mg(s) + 2 H2O(0) - Mg(OH)2(s) + H2(g) Calculate the standard enthalpy change at 25 °C for this reaction. What quantity of magnesium is needed to supply the heat required to warm 25 mL of water (d = 1,00 g mL-') from 25 °C to 85 °C?
please HEP on those 2 questions Question 13 4 pt The meals-ready-to-eat (MREs) in the military...
please HEP on those 2 questions
Question 13 4 pt The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals". Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2011) + Mg(OH)2(s) + H2(g) AH° (kJ/mol) Mg(s) 0 Mg(OH)2(s) -924.5 H2010) -285.8...
The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase...
The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals". Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2010) + Mg(OH)2(s) + H2(g) AH (kJ/mol) 0 Mg(s) Mg(OH)2(s) -924.5 H2010) -285.8 H2(g) 0 Calculate the mass, in g, of magnesium needed...
The following problems are to be submitted, The due date will be announced in class. (0)...
The following problems are to be submitted, The due date will be announced in class. (0) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x10s 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules. (i) What is the wavelength, in nm, of the photon associated with the work 1.(16 pts) function? (i) If molybdenum is irradiated with light of wavelength 120 nm, what...
The following problems are to submitted. The aue une wil U ITUUU HII Noni 1.( 16 pts) (a) If 913 J of heat are transferred into the system, and the system does 157 J of work, compute the change in the internal energy, and interpret the sign of your result. (b) Meals-Ready-to-eat (MREs) are military meals that can be heated on a flameless heater via the reaction Mg(s) + 2 H2O(l) ---> Mg(OH),(s) + 2 H2(g) (i) Calculate A H98.ro...
[8 marks] 1. The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. The source of the heat energy is the reaction shown below: Mg(s) + 2 H2O(1) ► Mg(OH)2() + H2(g) Mg(OH)2(s) H2O(1) Mg(s) H2(g) AHºr (kJ/mol) -924.54 -285.83 0 0 b) How much heat (9), in J, is released when 4.25 g of Mg is reacted according to the equation above?
The meals-ready-to-eat (MREs) in the military can be heated on a
flameless heater. You can purchase a similar product called “Heater
Meals”. Just pour water into the heater unit, wait a few minutes,
and you have a hot meal. The source of energy in the heater is the
exothermic reaction of magnesium with water:
Mg(s) + 2 H2O(ℓ) → Mg(OH)2(s) +
H2(g)
ΔHf° (kJ/mol)
Mg(s)
0
Mg(OH)2(s)
–924.5
H2O(ℓ)
–285.8
H2(g) ...
Question 13 4 pts The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals”. Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2O(l) + Mg(OH)2(s) + H2(g) AH° (kJ/mol) Mg(s) 0 Mg(OH)2(s) -924.5 H2011) -285.8 H2(g) 0 Calculate the mass, ing,...
Needing help with chemistry please
2. Meals, Ready-to-Eat (MREs) are military meals that can be heated on a flame-less heater. The heat is produced by the following reaction: Mg(s) + 2H2O(l) ? Mg(OH)2(s) + H2(g) a. Calculate the standard enthalpy change (???xn) for the reaction. Calculate the mass of Mg (in g) needed for this reaction to release enough energy to increase the temperature of 25 mL of water from 15°C to 85 C. The density of water is 1.00...
7.71 Ready-to-eat meals used by military personnel and campers can be heated on a flameless heater. The source of energy in the heater is the reaction repre- sented by Mg(s) + 2 H2O(0) - Mg(OH)2(s) + H2(g) Calculate the standard enthalpy change at 25 °C for this reaction. What quantity of magnesium is needed to supply the heat required to warm 25 mL of water (d = 1,00 g mL-') from 25 °C to 85 °C?
please HEP on those 2 questions
Question 13 4 pt The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals". Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2011) + Mg(OH)2(s) + H2(g) AH° (kJ/mol) Mg(s) 0 Mg(OH)2(s) -924.5 H2010) -285.8...
The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase a similar product called "Heater Meals". Just pour water into the heater unit, wait a few minutes, and you have a hot meal. The source of energy in the heater is the exothermic reaction of magnesium with water: Mg(s) + 2 H2010) + Mg(OH)2(s) + H2(g) AH (kJ/mol) 0 Mg(s) Mg(OH)2(s) -924.5 H2010) -285.8 H2(g) 0 Calculate the mass, in g, of magnesium needed...
The following problems are to be submitted, The due date will be announced in class. (0) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x10s 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules. (i) What is the wavelength, in nm, of the photon associated with the work 1.(16 pts) function? (i) If molybdenum is irradiated with light of wavelength 120 nm, what...
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