Chemistry

The molarity of a solution that contains 28 g KOH (molar mass 56 g/mol) per 250 mL of solution is:
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A mixture of 65 percent N2 and 35 percent CO2 gases (on a mass basis) enters the nozzle of a turbojet engine at 60 psia and 1400 R with a low velocity, and it expands to a pressure of 12 psia. If the isentropic efficiency of the nozzle is 88 percent, determine:(a) the exit temperature(b) the exit velocity of the mixture.Assume constant specific heats at room temperature.
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Calculate the molarity of a solution prepared by dissolving 6.87 grams of AgNO3 in enough water to make 2.50 liters of solution.
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9. Why do bees pollinate flowers?A. They want to get to food in the flower.B. They want to make seeds.C. They want to help the flowers reproduce.D. They want protection.
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William Rankine coined this energy fromA. Mechanical energyB. Kinetic energyC. Potential EnergyD. Total energyE. Chemical Energy
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How is energy from grass passed on between animals
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Thermal energy is measurement of what type of molecular energy? *
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Can rotation and revolution occur at the same time? Explain.
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Cualquier liquido a 25C de temperatura y al nivel del mar a) adquiere una forma y volumen definido b) posee la forma del recipiente que lo contiene y ocupa un volumen constante c) no tiene forma ni volumen definidos d) tiene estructura cristalina
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Can the solubility rules be used to find the state of any compound?
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Complete the following sentence by choosing the best answer:Waves transfer ____.a. particlesb. energy. lightd. matter
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To what temperature must a balloon, initially at 25C and 2.00 L, be heated in order to have a volume of 6.00 L
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Write an equation and solve the problem.3. Dexter buys a package of 38 plates. He alreadyhas 4 plates. He puts an equal number on each of6 tables. How many plates are on each table?
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HELP! 20 mL of hydrogen measured at 15C is heated to 35C.What is the new volume at the same pressure?
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How are the testes and the ovaries similar? They are part of the human skeleton. They are reproductive organs. They are sensory organs. They produce sperm.
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In order to boil water, Jacy places a pan of water on the burner of a stove. By which process of thermal energy transfer doesthe burner transfer heat to the pan?A conductionB. convectionC. radiationD. respiration
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___ SeCl6 + ___ O2 --> ___ SeO2 + ___ Cl2What is the balanced equation for these reactions?I give Brainliest! Please no links
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How many moles of KClO3 are needed to produce 480 grams of O2?
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(4 pts) Fill in the number of protons and electrons for each product and reactant (two boxes have been filled in for you). (2 pts) Verify that the number of protons on the left side of the chemical equation is equal to the number of protons of the right side. Show your work. (2 pts) Verify that the number of electrons on the left side of the chemical equation is equal to the number of electrons of the right side. Show your work. (3 pts) Which substance is being oxidized
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What is produced when a strong acid reacts with the bicarbonate buffer system in the human body?O waterO carbonate ionsO bicarbonate ionsO carbonic acid
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Whats the answer please give me the answer
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1. Newtons second law of motion describes the relationship between force, mass, and acceleration. Write the equation.
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In scientific notation, the number 0.00262 is expressed as
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