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Needing help with chemistry please
2. Meals, Ready-to-Eat (MREs) are military meals that can be heated...
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,...
[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?
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...
(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...
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...
The following problems are to submitted. The due date will be announced in class. 1( 16...
The following problems are to submitted. The due date will be announced in class. 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)2(s) + 2 H2(g) (i) Calculate A H...
need help ASAP Question 9 4 pts Exactly 1.100 g of CO2(g) was introduced into a...
need help ASAP
Question 9 4 pts Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found to be 815 mmHg. No chemical reaction occurred between CO2 and 02. Calculate the mass of Oz in the flask. 1.12 g 02 O 0.160 g 02 O 0.754 g 02 O 0.820 g 02 O 0.321 g 02 1.5 pts Question 10...
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,...
[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?
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 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...
The following problems are to submitted. The due date will be announced in class. 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)2(s) + 2 H2(g) (i) Calculate A H...
need help ASAP
Question 9 4 pts Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found to be 815 mmHg. No chemical reaction occurred between CO2 and 02. Calculate the mass of Oz in the flask. 1.12 g 02 O 0.160 g 02 O 0.754 g 02 O 0.820 g 02 O 0.321 g 02 1.5 pts Question 10...
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