Chemistry

A(n)image cannot be projected and forms where light rays appear to originate.
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Which equation represents conservation of charge?1. I- + 2e- I22. 2I- I2 + 2e-3. Br2 2Br- + 2e-4. Br + 2e- Br-
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A sample of air has a volume of 140.0 mL at 67C. To what temperature must the gasbe lowered to reduce its volume to 50.0 mL at constant pressure?
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pls I need help with these ques. help plsssssssssssssss
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how is the sun classified
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what percentage of water on earth is fresh water
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Identifying the Body's Responses toQuickCheckWhich type of response identifies a specific pathogen in the body?A(n)response
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Which of the following is NOT a way carbon dioxide returns to the atmosphere?decay of organismsemissions by factoriesphotosynthesiscellular respiration
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Which of the following is not an indication of a chemical change?A. Fracture FormationB. Energy transferC. Precipitate formation.D. Gas production
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using the following balanced chemical equation: PCL5 -> PCL3 + CL2 and knowing that Keq = 7.9, [PCL3] = 0.054M and [CL2] = 0.34M a. write the Keq expression for the reaction b. find the [PCL5] c circle the correct answer: the reaction favored is the (forward, reverse)
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What is another term for anode?
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A certain element X has four isotopes. 5.845% of X has a mass of 53.93961 amu. 91.75% of X has a mass of 55.93494 amu. 2.123% of X has a mass of 56.93539 amu. 0.2820% of X has a mass of 57.93328 amu. What is the average atomic mass of element X? Express your answer numerically to four significant figures.
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If 23.6 grams of a substance reacts with 42.5 grams of another substance, what would we expect the mass of the products to be after the reaction?
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Question 17 In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce gaseous ammonia. This reaction is now the first step taken to make most of the world's fertilizer. Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 786. liters per second of dinitrogen are consumed when the reaction is run at 222.C and 0.35atm. Calculate the rate at which ammonia is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits.
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Creatinine, !!!, is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly reliable indicator of kidney function. The normal level of creatinine in the blood for adults is approximately 1.0mg per deciliter (dL) of blood. If the density of blood is 1.025g/mL, calculate the molality of a normal creatinine level in a 10.0mL blood sample. What is the osmotic pressure (in atm) of this solution at 25.0C?
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CAN SOMEONE HELP ME?!?! IM CONFUSED
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What is the solvent in blood?
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An ethylene gas torch requires 300 L of gas at 0.8 atm. What will be the pressure of the gas if ethylene is supplied by a 200.0 L tank?
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does gravity affect the orbit of the international space
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1.Why is hot air hot?
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6. Find the partial pressures of the gases in a mixture with a total pressure of 101.3 kPa, if there are 7.8 mole ofNg, 2.1 mole of 0, 0.090 mole of Ar, and 0.010 mol of Co,3:205/10/219110112Pausebreak16X14&*A%7956O84{
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What are two scientific fields that utilize facial reconstruction?
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why do we see only one side of the moon from earth?
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Use the nuclear decay reaction in the picture to answer the following question.i. How does the reaction demonstrate the laws of conservation of charge and conservation of nucleon number?ii. What is the binding energy of one mole of atomic mass: 234, number of proton: 90, Thorium if the mass defect is 1.908 g/mol?
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