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- osjQib5plVDqEPgxo?. O GASES Solving for a gaseous reactant Jacqueline v The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 1775. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide (HgO) into liquid mercury and gaseous dioxygen. 2. Suppose 25.0 mL of dioxygen gas are produced by this reaction, at a temperature of 70.0 °C and pressure of exactly 1 atm. Calculate the mass of mercury(II) oxide that must have reacted. Round your answer to 3 significant digits. Explanation Check O 2021 McGraw-Hill Education All Rights Resenved Terms of Uss Privacy Accessibility MacBook Air III1)A farmer is using a bushel basket to pour apples into a rectangular bin that has a base that is 5.000 meters by 4.000 meters. If the farmer pours 356 baskets full of apples into the bin, how high will the apples fill the bin in meters? Assume each basket is exactly one bushel and that the apples uniformly fill the bin. Show all of your work. Assume 1.000 bushel=35.24 liters.What is the maximum height achieved if a 0.600 kg0.600 kg mass is thrown straight upward with an initial speed of 80.0 m⋅s−1?80.0 m⋅s−1?
- A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together. kJ 0.020 x10 mmol "C mol CA student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together. -7.5 × 105 J mmol. °C M = ? kJ mol. °C ☐x10 X μ 010Mg(OH)p(s) → MgO(s) + H;O(1) Express your answer in kilojoues to one decimal place. AZ Al kJ Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part C N;O4(g) +4H2(g)→N 2(g)+4H20(g)
- B is a weak base with Kp = (4.11x10^-9). What is the percent ionization of a (7.060x10^-1) M solution of B? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer1.867 x 1016 mol-4 L4 Convert to scientific notation.nHMAC%3Def41415d9158412623399163083b2ede#10001 Spr. 2021 8 Gu HI, Leira v Sign Out Item 4 I Review | Constants | Periodic Table Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 2250 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. Part A How many nutrition bars should Alexandra pack? Express the number of bars numerically. > View Available Hint(s) ν ΑΣφ bars Submit Previous Answers 0V 12:33
- A student calibrated a 10-mL graduated cylinder using water. The empty graduated cylinder weighed 24.378 grams. When it was filled with 9.89 mL of deionized water, it weighed 33.826 grams. The temperature of the water was 21.8oC. What is the density of water, based on these measurements?In the year 2013, an estimated amount of 36 billion metrictons (1 metric ton = 1000 kg) of carbon dioxide 1CO22 wasemitted worldwide due to fossil fuel combustion and cementproduction. Express this mass of CO2 in grams without exponentialnotation, using an appropriate metric prefixPheromones are compounds secreted by females of manyinsect species to attract mates. Typically, 1.0 × 10−8gof a pheromone is sufficient to reach all targeted maleswithin a radius of 0.50 mi. Calculate the density of thepheromone (in grams per liter) in a cylindrical air spacehaving a radius of 0.50 mi and a height of 40 ft (volumeof a cylinder of radius r and height h is πr2h).