How do you calculate the energy in a marshmallow?
Now we can calculate the food energy in the marshmallow: The molar mass of sucrose is 342.3 g/mol, so the energy per gram is -5643.8 kJ/mol / 342.3 g/mol = 16.49 kJ/g. In the 7.5 g marshmallow, remembering that 1 dietary Calorie is 4.184 kJ, we have 7.5 g x 16.49 kJ/g x (1 Cal / 4.184 kJ) = 29.6 Cal.
How do flying marshmallows work?
When you release the rubber band, the rubber band then does WORK on the marshmallow and the ELASTIC ENERGY is transformed into what is called KINETIC ENERGY (the energy of motion) in the flying marshmallow. When the marshmallow hits something and stops, the KINETIC ENERGY is then transformed into heat, or HEAT ENERGY.
Where do the calories in marshmallows come from?
Since marshmallows are made out of different types of sugar (usually sucrose and corn syrup), most of the calories in marshmallows come from carbohydrates.✍ In theory, what could be the most powerful source of energy?
What happens when you pull the rubber bands off a marshmallow?
When the marshmallow hits something and stops, the KINETIC ENERGY is then transformed into heat, or HEAT ENERGY. In other words, the ENERGY you produce by pulling back on the rubber bands isn’t lost.
Where does the energy in a marshmallow come from?
Energy of Sucrose Hydrolysis in Saliva.
How much energy is in a marshmallow?
The food with the lowest energy content per gram was the marshmallow at 362.3 J/g.
What energy is used to toast marshmallows?
The glow indicates that they're giving off electromagnetic waves, known as radiant energy, which delivers a more consistent heat. Once you've found your spot, you want to slowly rotate your mallow at a safe distance. Remember that it is made up mostly of sugar, i.e. carbon, hydrogen, and oxygen, i.e. the perfect fuel!
Are marshmallows a gas?
Additionally, marshmallows have air whipped into them during the manufacturing process, so they actually contain a solid, a liquid, and a gas.
What is the energy content of foods?
Introduction. Energy content is an important property of food. The energy your body needs for running, talking, and thinking comes from the food you eat. Energy content is the amount of heat produced by the burning of 1 gram of a substance, and is measured in joules per gram (J/g).
How does energy change when a marshmallow is burned over a fire?
If the marshmallow completely burns, it undergoes color changes, because marshmallows are mainly made of sugars and other substances that cook or burn. This burning/cooking produces new substances in the marshmallow's crust. It produces caramel. This represents a chemical change.
Is heating a marshmallow conduction?
Conduction is where the heat is tansfered directly into the object from the heat source. If you stick your Marshmallow in the middle of the fire, it will burn to a Crisp, charcoal black. Most people Dislike this way of toasting a marshmallow but it happens to be my favorite.
What happens when a marshmallow is heated?
When heating a marshmallow in a microwave, some moisture inside the marshmallow evaporates, adding gas to the bubbles. In addition, a warmer gas pushes outward with more force. Both adding gas and heating cause the gas bubbles to expand, thereby causing the marshmallow to puff up.
Is toasting a marshmallow a chemical change?
Heating the marshmallow over the fire can make the sugar caramelize, a chemical reaction that produces the brown color and toasted flavor.
What kind of matter is marshmallow?
The marshmallow is a foam, consisting of an aqueous continuous phase and a gaseous dispersed phase (in other words, a liquid with gas bubbles spread throughout).
What is a marshmallow made of?
A typical marshmallow contains sugar, corn syrup, and gelatin, plus some air. That's it. “A marshmallow is basically a foam that's stabilized by gelatin,” says Richard Hartel, a food engineer at the University of Wisconsin–Madison. In marshmallows, the foam is made up of air suspended in the liquid sugar mixture.
Are marshmallows mostly air?
Marshmallows are mostly made of air, which is a gas. Gases expand and contract when the pressure changes. Under high pressure, gases can be compressed. Conversely, gases expand under low pressure.
How is roasting a marshmallow radiation?
When hovered over the hotplate, the marshmallow became warm, but did not melt. This is an observation of radiation. The electromagnetic waves move through the air from the high energy hotplate to the lower energy marshmallow, causing it to heat up.
What do you need to roast marshmallows?
Lay the marshmallows in a single layer on a foil-lined baking sheet. Place on the middle rack under the broiler and watch it like a hawk. Once they brown – within a minute or two — rotate them with a spatula and toast the other side. Move the sheet to the upper rack if the marshmallows aren't browning.
Answer
Systems can possess energy based on two factors: the position of particles or chemical bonds in the system, or movement of particles in the system. Energy that is stored due to position or chemical bonds is potential energy. In contrast, energy of movement is kinetic energy.
Answer
Systems can possess energy based on two factors: the position of particles or chemical bonds in the system, or movement of particles in the system. Energy that is stored due to position or chemical bonds is potential energy. In contrast, energy of movement is kinetic energy.
New questions in Environmental Sciences
इकाई -1/UNIT-1 2. जल संसाधन क्या है? जल संसाधन की उपयोगिता एवं संरक्षण को समझाइये। What are the water resource. Describe the utility and conservation …
