Hot air at 50 C does not cause a lethal burn on our skin, but water with the same temperature is dangerous and it can burn our skin. Explain the reason?
Q: As the temperature decreases, what happens to the volume?
A: As we increase the temperature of the system, more energy is supplied to the atoms. So, at higher…
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Q: The label on a candy bar says that it contains 150 Calories. If you could convert all of that energy…
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Q: What happens when ionizing radiation strikes an atom in a chemical compound?
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A: The energy states of electromagnetic radiation is directly proportional to the wavelength of the…
Q: water can absorbe or release large amount of heat energy with little changes in actual temperature…
A: water is an important molecule for life and organic process . water have some special qualities…
Q: Molecules that absorb electromagnetic energy have structural components called _____________.
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Q: Which properties of water best explains why organisms resist temperature changes, although they give…
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Q: Would it be possible to skate on “dry ice,” that is, solid CO2?
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Q: Why oil gets hot faster than water?
A: Since you have asked multiple questions, we will solve the foremost question for you. If you want…
Q: Radiation from the sun that heat earth, and can cause skin cancer when in excess are called
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Q: Label the different types of phases shown in the picture
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Q: What will be the results if our body are lack/absence of elements?
A: There are several elements present in the body that are responsible for different purposes.
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Q: which of the following experimental plans to test the effects of pressure on a reaction with gases…
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Q: if we wanted to measure the energy released by an exothermic reaction (like combustion, acid/base…
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Q: when solar radiation crosses space and moves towards earth.it consists of many types of radiation…
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Q: Why is oxygen when unbound to any other material can be toxic to life?
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Q: If a reaction is spontaneous, does that mean it will be fast?
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Q: 53. A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27…
A: a. Oxygen
Q: In the following chemical reaction, which compounds are the products? Carbon dioxide + Water → Sugar…
A: For any reaction to get complete substrate is required. The resultant is called as product.
Q: A catalyst does not alter the difference in the energy contents of the reactants and products. True…
A: Catalysts are substances such as solids, liquids, and gases that speed up chemical processes and are…
Q: The tendency for a substance to gain electrons is called the _____________ potential.
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Q: A sunburn is a familiar example of the effect of ionizing radiation, like ultraviolet light, where…
A: The "flow of energy" in the ecosystem is one of the most important aspects of the survival of such a…
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A: Correct answer is option d.
Q: how much energy is necessary to heat 7.0 kg of water from room temperature (20 degrees Celsius) to…
A: To get the remaining sub-parts solved, please repost the complete question and mention the…
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- Why oil gets hot faster than the water?Notice that the difference between the freezing and boiling point of water is 180 degrees in the TEMPERATURE (°C) symbol (*), followed immediately by either C or F (no spaces). On the Fahrenheit scale: O°F 32°F freezing point of water (equivalent to 0°C) 212°F boiling point of water (equivalent to 100°C) Fahrenheit scale (32°F....212°F) but is 100 degrees in the Celsius scale (0°C..T00 C). As with using the metric system, it is important in the sciences to learn to use and report temperature readings using the Celsius scale since it is more universally used than the Fanrenniore scale. The formulas used to convert between these two temperature scales are listed below. When converting from°F to°C °C= ('F - 32) 1.8 °C=5/9('F - 32) -OR- When converting from°C to°F °F = (°C x 1.8) + 32 °F = (°C x 9/5) + 32 -OR- Use the above equations (either the decimal or fraction form) to complete the following conversions. Space is provided should you wish to write out your work. Place your answer (and…(I) Why the physicochemical changes in liquid water caused by radiation is the key to understanding the biological effects of radiation? Please give a short, one-sentence explanation. (II) Name the three key stages of the physicochemical changes produced in liquid water due to radiation. (III) Briefly describe the three key stages. A one- or two-sentence explanation for each of the three key stages would be sufficient.
- Which of the following can be attributed to water’s high specific heat? A- oil and water do not mix well B-ice floats on water C- sugar dissolves in hot tea faster than in iced tea D- A lake heats up more slowly than the air around itWhich of the following statements is true? 1) The shortest wavelength of light is the ultraviolet ray, which is the highest in energy. 2) The longest wavelength of light is the ultraviolet ray, which is the highest in energy 3) The shortest wavelength of light is the visible light, which is the highest in energy 4 ) The shortest wavelength of light is the infrared ray, which is the highest in energy. 5) The longest wavelength of light is the infrared raywhich is the highest in energy .When copper and sulfur react, two products are possible: copper(I) sulfide, Cu2S, and copper(II) sulfide, CuS. A scientist hypothesizes that holding a loop of thin copper wire in the vapour from boiling sulfur will produce pure Cu2S when the copper and sulfur react. Suggest what measurements, related to mole ratios, the scientist should make to test this hypothesis.
- A sunburn is a familiar example of the effect of ionizing radiation, like ultraviolet light, where longer exposure harms the skin and tissues. At the atomic level, what is being produced by ionizing radiation on skin? O neutrons O protons O light O ions.A slice of pizza has 500 kcal. If we could burn the pizza and useall the heat to warm a 50-L container of cold water, what wouldbe the approximate increase in the temperature of the water?(Note: A liter of cold water weighs about 1 kg.)(A) 50°C (B) 5°C(C) 100°C (D) 10°Cif we wanted to measure the energy released by an exothermic reaction (like combustion, acid/base neutralization, and oxidation) we would do it in a sealed container and monitor the increase in [1 word]
- Evaporation of sweat requires energy and thus take excess heat away from the body. Some of the water that you drink may eventually be converted into sweat and evaporate. If you drink a 20-ounce bottle of water that had been inthe refrigerator at 3.8 °C, how much heat is needed to convert all of that water into sweat and then to vapor?? (Note: Your body temperature is 36.6 °C. For the purpose of solving this problem, assume that the thermal properties of sweat are the same as for water.)Light Intensity 20 Temperature 25 Light Color = White Explain what happened to the dissolved oxygen over the course of 60 minutes. Why did this happen? In other words, what process caused the change that you see in DO?Why is 350°C water emitted from a black smoker not boiling?
