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Is the chemical reaction in flameless ration heaters classified as an endothermic or an exothermic reaction?
The chemical reaction in flameless ration heaters is classified as an exothermic reaction because it releases heat as a byproduct. The reaction involves the oxidation of a material such as magnesium, which produces heat that can warm up the food pouch.
How does the 5 hour timer in a flameless candle work?
Flameless candles have batteries that power the light and the circuitry has a built in timer. They run on AA batteries.
Are there small or large pieces of magnesium in FRH?
In a Flameless Ration Heater (FRH), the magnesium is typically in the form of small shavings or powder. These small magnesium pieces are designed to react with water to produce heat through an exothermic chemical reaction. The surface area of the magnesium is increased in smaller pieces, allowing for a faster reaction and more efficient heat generation within the FRH.
Why NaCl is added to the flameless heater?
The water solution of sodium chloride is an electrolyte; thus a galvanic cell is formed in the heater which contain also small particles of iron and magnesium. Electricity is produced and following heat is released. See the link below.
Why does iron and sodium included FRH?
Iron and sodium are included in FRH (Flameless Ration Heaters) because they undergo an exothermic reaction when activated by water, generating heat to warm up the food in the ration pack. Iron reacts with oxygen in the presence of water to produce heat, while sodium helps initiate and catalyze the reaction to speed up the heating process.
Who invented flameless candles?
hmm..not me.. LOL =P
Does a horses daily ration depends on how much work he does?
Yes
Is a horses daily ration is determined by the weight and the work it does?
YES.
Why do you think a FRH does not come with water already in it?
A FRH, or Flameless Ration Heater, does not come with water already in it because the chemical reaction that generates heat and steam to heat the food inside requires a specific amount of water to be added. Adding too much or too little water can affect the efficiency of the heating process. By not pre-filling the FRH with water, manufacturers ensure that users can control the amount of water added, optimizing the heating performance for the best results.
Is the horse's daily ration mainly determined by its weight and the work it does?
Yes
What is the ration of work output to work input and is usually expressed as a percent?
Assuming that you mean ratio, and not ration, it is a measure of the efficiency. It has a value between 0 and 1 and a percentage is a convenient way to represent such values.
Why is heater not work?
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