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…

Q: Typical frequencies for several types of electromagnetic radiation are given below. Calculate the…

A: The waves of electromagnetic filed causes electromagnetic radiations. These waves propagate through…

Q: At high concentration which oxides are poisonous?

A: The major contributors of the air pollution are nitrogen oxides. They have role in the formation of…

Q: What does it mean to say that a substance is radioactive?

A: A substance composed two or more elements bonded together via chemical bonds is known as a compound.…

Q: Which of the following is not true about electromagnetic radiation? O frequency is directly…

A: In electromagnetic radiations Energy of waves is directly proportional to its frequency and…

Q: compounds are the products? Carb

A: Carbon dioxide can be defined as a chemical compound that is composed of one carbon and two oxygen…

Q: When reacted, how does the use of potassium (K+) vs sodium (Na+) change the soap product?

A: Saponification is a biochemical process which deals with the conversion of  oil, lipid, and fats…

Q: A drug that delivers 500 mg has a half-life of 4 hours. How many milligrams of drug will remain in…

A: The accurate concentration of the drug in the body should be calculated to ensure the best…

Q: Why can water absorb a great amount of heat with little increase in its temperature? What is this…

A: Heat capacity is defined as the amount of heat provided to the material to bring out a unit change…

Q: Radioactivity is a phenomenon of the spontaneous emission of: A. protons (alpha particles)…

A: Radioactivity is the physical process of spontaneous atomic nucleic transformations. Mother, or…

Q: The label on a candy bar says that it contains 150 Calories. If you could convert all of that energy…

A: The calories on the candy bar or food package is actually kilocalories (Kcal). If it shows 1…

Q: What happens when ionizing radiation strikes an atom in a chemical compound?

A: Ionising radiation is radiation, travelling as a particle or electromagnetic wave, that carries…

Q: Which of the following forms of electromagnetic radiation has the highest energy?   Radio waves…

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 _____________.

A: Electromagnetic radiation or energy refers to the waves of the electromagnetic field propagating…

Q: Which properties of water best explains why organisms resist temperature changes, although they give…

A: Water is utilized for help, temperature guideline, transport of body liquids, and response climate.…

Q: The graph below shows how temperature affects the rate of chemical reactions   At what temperature…

A: The enzyme is a proteinaceous molecule that is composed of polypeptide chain and it's structure is…

Q: Look around your home for objects, food products, appliances, etc. that are designed or made guided…

A: The different factors that can influence the rate of reaction are temperature, the concentration of…

Q: Concerning antioxidants, which one of the following statements is true? a. free radicals, reduce…

A: A free radical is characterized as a molecule that contains at least one unpaired electron and is…

Q: Would it be possible to skate on “dry ice,” that is, solid CO2?

A: Dry ice is the solid form of carbon dioxide and is used primarily as a cooling agent, but is also…

Q: Suppose you provided carbon dioxide with radioactive oxygen atoms to a plant. Into which kind of…

A: Photosynthesis is a process used by plants and other organisms containing chlorophyll to convert…

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

A: Radiation from the Sun, which is more popularly known as sunlight, is a mixture of:…

Q: Label the different types of phases shown in the picture

A: Mitosis Mitosis is the division phase of a cell cycle. In this phase of the cell cycle, the cell…

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.

Q: Explain why water has a high specific heat. Hint: Think about hydrogen bonds and how temperature…

A: The quantity of energy necessary to raise the temperature of 1 g of any substance by 1oC is called…

Q: which of the following experimental plans to test the effects of pressure on a reaction with gases…

A: A gaseous reaction is one in which the reactants and/or products are present in a gaseous state.…

Q: if we wanted to measure the energy released by an exothermic reaction (like combustion, acid/base…

A: Exothermic reactions proceed as soon as the components come into contact and give off energy/heat.…

Q: when solar radiation crosses space and moves towards earth.it consists of many types of radiation…

A: Answer - The Electromagnetic radiation (EMR) consists of waves . The waves contains electric  and…

Q: how does the chemical reaction of ethanol burning relate to the matter and chemical changes that…

A: Ethanol is an alcohol that can be produced in the body by the process of fermentation. The process…

Q: It is estimated that you lose heat to cold water four times faster than to cold air. Your body is…

A: The body loses about 2% of its heat through air conduction. However, water causes more heat loss…

Q: Why is oxygen when unbound to any other material can be toxic to life?

A: Life as we know it takes many diverse forms, from the largest whales to the tiniest unicellular…

Q: If a reaction is spontaneous, does that mean it will be fast?

A: Introduction: A spontaneous reaction is the one that occurs on its own. However, it has nothing to…

Q: n which of the following processes is the amount of heat involved the highest? A. completely…

A: Endothermic reactions are the reactions that take up energy or heat in the form of energy to carry…

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.

A: In the electrochemical series, the metals are arranged to gain or lose electrons. whereas oxidation…

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…

Q: hydrogen at 101 kpa each day . If each days supply of hydrogen were kept at a pressure of 366 kpa,…

A: The relationship for Boyle's Law can be expressed as follows: P1V1 = P2V2, where P1 and V1 are the…

Q: Light Intensity 20 Temperature 25 Light Color = White Explain what happened to the dissolved…

A: Light energy is used by plants in order to Carbon into useful compounds like glucose, the breakdown…

Q: Why would someone want to use water as a coolant for their car engine? Because it is transparent. O…

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…