Master Chemistry with Fun Quizzes & Brain Teasers!

A student adds 7.00 g of dry ice (solid co2) to an empty balloon. what will be the volume of the balloon at stp after all the dry ice sublimes (converts to gaseous co2)
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What mass of KNO3 is needed to create a saturated solution at 60 C in 240. 0 mL of distilledwater?
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How much heat is evolved when 27.5 g of ammonia gas condenses to a liquid at its boiling point?ahcond = -23.3 kj/mol
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Bombardment of boron-10 with a neutron produces a hydrogen-1 atom and another nuclide. what is this nuclide?
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The effect of the stratosphere being colder at the bottom than at the top is:sudden weather changesbetter radio receptionno vertical air movementthe separation of gases into layers
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A chemist adds of a mercury(i) chloride solution to a reaction flask. calculate the mass in micrograms of mercury(i) chloride the chemist has added to the flask. round your answer to significant digits.
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How is the (Delta)Hfusion used to calculate volume of liquid frozen that produces 1 kJ of energy?
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Which two pioneer species help break uprock to create a substrate rich in organicmaterial. starts the process of creatingsoil in a newly created environment.
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If 500. 0 mL of a gas at 1. 99 atm of pressure is increased to 5. 25 atm, what is the newvolume if the temperature is constant?
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If i were to determine how many liters 26 grams of water is, what type of conversion would this be?
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What mass of copper (II) sulfate was in the hydrate? Show your work or explain your reasoning
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Fill in the missing symbol in this nuclear chemical equation
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The molar solubility of C a ( O H ) 2 was experimentally determined to be 0. 020 M. Based on this value, what is the K s p of C a ( O H ) 2 ?
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A 35. 3 g of element m is reacted with nitrogen to produce 43. 5 g of compound m3n2. what is (i) the molar mass of the element and (ii) name of the element?
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Which is composed of aromatic hydrocarbons?clothingbarbeque fuelpain relieverspolyvinyl chloride
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Determine the number of moles present in each compound. 6.50 g ZnSO4.
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If the glaciers melted at a rate of 5% per year, how long will it take 50% of the glaciers to melt?
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Manipulate seven additional data sets and place these values in your Ocean InteractionsWorksheet. BiodiversityArctic IceTechnology ImpactLife Sustainability1,0003. 71001,850
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1. Draw the structure of diiodine monoselenide anda. Write the formulab. Determine the molecular geometryC. Calculate the formal charge of EACH element. (SHOW ALL WORK)
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If a person consumes 5. 33 105 kcal in a day and one barrel of oil can produce 3. 70 106 kcal, what is the equivalent of energy consumed per year by that person in terms of barrels of oil?
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1. How many liters of water will be produced if you have 17. 43 grams of ammonia (NH3)? *(8 Points)4 NH3 + 502 --> 4 NO + 6H2OEnter your math answer
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Part 1. A chemist reacted 15. 0 liters of gas with in the laboratory to form Cl 2 and Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and F 2 +2NaCl Cl 2 +2NaF Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP
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ASAP Big test Question 7 (1 point) SavedThe subscript numbers in covalent compounds can be determined by_____Question 7 options:the number of the column in which the element is foundthe addition of the charges on each metalthe prefixes used in the written name of the compoundsubtraction of the charges on the metal
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A solution of lithium carbonate reacts with a solution of potassium iodide to produce solid potassium carbonate and aqueous lithium iodide. You measure 3. 9 moles of potassium carbonate produced by the reaction. How much lithium iodide was produced?
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