The 1st law of energy and conservation says that matter cannot be created or destroyed, but you’re a lot bigger than you were when you were born. So where did all that extra matter come from
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The 1st law of energy and conservation says that matter cannot be created or destroyed, but you’re a lot bigger than you were when you were born. So where did all that extra matter come from?
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- The 1st law of thermodynamics says that matter cannot be created or destroyed, but you’re a lot bigger than you were when you were born. So where did all that extra matter come from?Albert Einstein’s equation for the conservation of matter and energy (E = mc2) predicts that if the mass of uranium to be split in a nuclear fission reaction were to double, then: the amount of energy released would be decreased to one-fourth the amount of energy released would be decreased to one-half the amount of energy released would be increased four-fold the amount of energy released would be increased two-fold the amount of energy released would remain the sameWhich of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.
- A. The first shell corresponds to the first energy level, and it can hold up to 2 electrons. Hydrogen has one proton, so it has 1 electron and one vacancy. A helium atom has 2 protons, 2 electrons, and no vacancies. B. The second shell corresponds to the second energy level, and it can hold up to 8 electrons. Carbon has 6 electrons, so its first shell is full. Its second shell has 4 electrons and four vacancies. Oxygen has 8 electrons and two vacancies. Neon has 10 electrons and no vacancies. C. The third shell corresponds to the third energy level, and it can hold up to 8 electrons. A sodium atom has 11 electrons, so its first two shells are full; the third shell has one electron. Thus, sodium has seven vacancies. Chlorine has 17 electrons and one vacancy. Argon has 18 electrons and no vacancies. Figure It Out: Which of these models have unpaired electrons in their outer shell?A truck was carrying a substance in a tank. The molecules of that substance were moving away from each other. The truck parked overnight in a place where energy transferred out of the substance. In the morning, the substance was a gas. How were the molecules moving in the morning? Explain why the molecules were moving that way after energy was transferred out of them.1. How would you scientifically define the three things that emerge in a chemical reaction? 2. Research evidence showed that microbial species and bacteria could be found in bottled water. In detail, explain the how and why and dangers. 3. Why did it take 380,000 years for the universe to cool enough to slow down the electrons so that the nuclei could capture them to form the first atoms? 4. Explain who discovered organic compounds and why carbohydrates, lipids, proteins, and nucleic acids, are the basis for the molecules of life.
- Which of the following happens in all chemical reactions (involving molecules) in all living organisms? O C) Chemical energy changes form to thermal energy O A and B O A, B, and C O A) Matter changes form from one combination of atoms to a different combination of atoms O D) Electromagnetic (light) energy changes form to chemical energy O B) Chemical energy in one molecule changes form to chemical energy in another molecule O A, B, C, and DWhere does all the energy on Earth used by living things originate from? The Earth's core The Sun The Moon MarsChlorophyll, the green pigment in plants, primarily absorbs light of what two colors? OA. It does not absorb light in the visible spectrum OB. Blue and red OC. Far red and infrared OD.Green and yellow QUESTION 21 Approximately one-half of the energy content of solar radiation is in what part of the radiation spectrum? OA. Infrared OB. Visible OC Ultraviolet OD.Microwave QUESTION 22 What chemical compound is the ultimate scce of electrons to power the photosynthetic conversion of solar energy to bioenergy? O A. Carbon dioxide O B. Water OC. Fresca OD.Wood QUESTION 23 What is the function of the orange and yellow colored compounds that seem to magically appear in the fall in the leaves of many trees? OA. Maple syrup production O B. Insect attraction OC ATP production O D.Accessory pigments in antenna complexes
- What type of energy is used by your body when you eat food? Group of answer choices chemical energy thermal energy gravitational energy electrical energy What type of energy comes from the motion of tiny particles of matter? Group of answer choices thermal energy Sound energy gravitational energy nuclear energyThe molecules for fossil fuels like gasoline, diesel, and natural gas are made only of carbon and hydrogen atoms; for this reason, they are called "hydrocarbons". A carbon atom can form 4 bonds, hydrogen 1, thus the simplest hydrocarbon is CH4. It's a gas at room temperature, and it's the fossil fuel called natural gas when used at home in gas appliances and it's called CNG (compressed natural gas) when used to power cars and buses. In the image below, what is the technical name for CH4? CH4 + 202 CO2 + 2 H20 Methane Охудen Carbon Dioxide Water Combustion Reaction ::Which of the following is the only option that does not have atoms? O carbon dioxide O organic molecules in waste O ATP O sunlight O organic molecules in food
