Chemistry

A compound (C_9H_9BrO_2) gives the following NMR data. Draw the structure of the compound.'1^H-NMR: 1.39 ppm, t(3H); 4.38 ppm, q(2H); 7.57 ppm, d(2H); 7.90 ppm, d(2H)13^C-NMR: 165.73; 131.56; 131.01; 129.84; 127.81; 61.18; 14.18You do not have to consider stereo chemistry.You do not have to explicitly draw H atoms.Do not include lone pairs in your answer.
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A substance is followed by the symbol (I) in a chemical Equation. What does the symbol Represent
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What is buffers and mention its importance?
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How does antifreeze rely on colligative properties to work?A. It causes the vapor pressure to increase and the increased outward pressure of the gasoline vapors prevents it from solidifying into ice.B. It causes freezing point elevation which raises the temperature of the gasoline without letting it freeze.C. It causes freezing point depression which requires the gasoline to reach a much lower temperature before freezing.D. It causing boiling point elevation, which raises the temperature of the gasoline without letting it boil so that it can resist the cold.WILL GIVE BRAINLIEST FOR CORRECT!!!
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fill in the blanks with the words given below-[Atoms, homogeneous, metals, true, saturated, homogeneous, colloidal, compounds, lustrous]1.An element which are sonorous are called................2.An element is made up of only one kind of ....................3.Alloys are ............................. mixtures.4.Elements chemically combines in fixed proportion to form ........................5. Metals are................................... and can be polished.6. a solution in which no more solute can be dissolved is called a .................... solution.7. Milk is a .............. solution but vinegar is a .................. solution.8. A solution is a ................... mixture.pls help, could not get these answers
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What type of chemist exclusively studies most carbon compounds?-biochemist-physical chemist-organic chemist-inorganic chemist
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Mike wants to galvanize iron to protect it from rusting. Which metal should he use?AplatinumB.aluminumC.copperD.zincE.tungsten
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In the reaction 2 AgI + HgI 2 Ag 2HgI 4, 2.00 g of AgI and 3.50 g of HgI 2 were used. What is the limiting reactant?
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In the pictured cell, the side containing zinc is the Choose... and the side containing copper is the Choose... . The purpose of the N a 2 S O 4 NaX2SOX4 is to
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Consider the following practical aspects of titration.(a) how can you tell when nearing the end point in titration?(b) What volume of NaOH is required to permanently change the indicator at the end point?(c) If KHP sample #1 requires 19.90 mL of NaOH solution to reach an end point, what volume is required for samples #2 and #3?(d) if vinegar sample #1 requires 29.05 mL of NaOH solution to reach an endpoint, what volume is required for samole #2 and #3?
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How do weathering and deposition differ? Weathering breaks down rocks; deposition leaves them in new places. Weathering has to do with air; deposition has to do with plants. Weathering occurs only in summer; deposition occurs year-round. Weathering can be chemical or physical; deposition is only chemical
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The recommended application for dicyclanil for an adult sheep is 65 mg/kg of body mass. If dicyclanil is supplied in a spray with a concentration of 50. mg/mL, how many milliliters of the spray are required to treat a 70.-kg adult sheep?
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urgent plz help thanks! Which statement best describes a compound formed by an ionic bond?A) negatively chargedB) neutralC) contains multiple chargesD) positively charged
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What's the name for the part of Earth made of rock?A. GeosphereB. AtmosphereC. HydrosphereD. BiosphereSUBMIT
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How many milliliters of 7.10 M hydrobromic acid solution should be used to prepare 5.50 L of 0.400 M HBr
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why there are two chloride ions for every calcium ion
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You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa, CH3COONa, and NaH2PO4. How many mL of HCOOH and HCOONa would you use to make approximately a liter of the buffer?
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how many nitrogen atoms are in 18.8 g of barium nitride
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A 2.87g sample of carbon reacts with hydrogen to form 3.41g of car fuel. What is the empirical formula of the car fuel?
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Predict the most likely bond type for the following. a. Cu (Copper) b. KCl (Potassium Chloride) c. Si (Silicon) d. CdTe (Cadmium Telluride) e. ZnTe (Zinc Telluride)
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Im having trouble with this assignment please help.
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A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled to very low temperatures. Which of the following statements best describes what the scientist is observing?The scientist is observing the electrical power of a superconductor.The scientist is observing the temperature of a superconductor.The scientist is observing an intensive property of a superconductor.The scientist is observing an extensive property of a superconductor
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What is the initial temperature (C) of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of -123C?
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Please tell the answer
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