Alexander, who weighs 150lb, decides to climb Mt. Krumpett, which is 5250 m high. For his food supply, he decides to take nutrition bars. The labels on the bars states that each 100-g bar contains 10 g of fat, 40 g of protein, and 50 g of carbohydrates. One gram of fat contain 9 Calories, whereas each gram of protein and cabohydrates contain 4 Calories. Alexander wants to know excatly how many bars to pack for the journey. To provide a margin of safety, he assumes that he will need as much energy for the return trip as the uphill climb. How many bars should Alexander pack

Ery 1 3 M (M) 2req The production capacity for acrylonitrile (C3H3N) in the United States is over 2 billion pounds per year. Acrylonitrile, the building block for polyacrylonitrile fibers and a variety of plastics, is produced from gaseous propylene, ammonia, and oxygen: 2C3H6(g) + 2NH3(g) + 30₂(g) → 2C3H3N(g) + 6H₂O(g) Assuming 100% yield, determine the mass of acrylonitrile which can be produced from the mixture below: Mass 7.28x102 g 5.00 x 102 g 1.00 x 103 g In progress Reactant oxygen propylene ammonia oxygen What mass of water is formed from your mixture? mass of water formed = g Calculate the mass (in grams) of each reactant after the reaction is complete: Submit g = mass of acrylonitrile produced Reactant Mass remaining propylene ammonia Show Hints ס ס ס g g Cengage Learning Cengage Technical Support Previous Next Save and Exit

The following equation shows the conversion of aluminum oxide (from the ore bauxite) to aluminum: 2Al2O3(s) → 4Al(s)+3O2(g)2Al2O3(s) → 4Al(s)+3O2(g), ΔHΔH = +801 kcalkcal (+3350 kJkJ ) How many kilocalories are required to produce 1.75 molmol of aluminum? How many kilojoules are required to produce 1.75 molmol of aluminum? How many kilocalories are required to produce 10.3 gg of aluminum? How many kilojoules are required to produce 10.3 gg of aluminum?

If an athlete expends about 7.10 x 10² Cal/hr then how many minutes would the athlete need to run to "burn off" the Calories consumed from eating a quarter-pound cheeseburger, French fries, and a chocolate shake that contains a total of 120. g carbohydrates, 49 g of fat, and 45 g of protein. Fat Carbohydrates Proteins Calories per gram 9.0 4.0 4.0 6713100 M

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9:08 PM ☹ & = ikf MB² = 5.12 °C/m 19²2- (-130%) = AT £ 1Jf=18492 ug°c = (5.12 L/m) n = 3.611 ●●● 25 Question 9 of 14 | g 1 3 4 6 7 9 +/- 0 Tap here or pull up for additional resources 8 What mass in grams of NaCl would need to be added to 2051 g of water to increase the boiling temperature of the solution by 1.500 °C? (Kb for water is 0.5100 °C/m) X C 20% 0 Submit x 100

Ethylene (CH₂CH₂) is the starting point for a wide array of industrial chemical syntheses. For example, worldwide about 8.0 × 100 kg of polyethylene are made from ethylene each year, for use in everything from household plumbing to artificial joints. Natural sources of ethylene are entirely inadequate to meet world demand, so ethane (CH3CH3) from natural gas is "cracked" in refineries at high temperature in a kinetically complex reaction that produces ethylene gas and hydrogen gas. Suppose an engineer studying ethane cracking fills a 50.0 L reaction tank with 20.0 atm of ethane gas and raises the temperature to 600. °C. She believes K = 0.70 at this temperature. р alo Calculate the percent by mass of ethylene the engineer expects to find in the equilibrium gas mixture. Round your answer to 2 significant digits. Ar Note for advanced students: the engineer may be mistaken about the correct value of K, and the mass percent of ethylene you calculate may not be what she actually observes. %…

What is the boiling point of the automobile radiator fluid prepared by mixing 1.00  L of ethylene glycol (HOCH2CH2OH, density = 1.114 g/mL) with 1.06  L of water (density = 1.000 g/mL)?The Kb of water is 0.520°C/m.

DATA : Mass of Magnesium (g) 0.0525 g Volume of hydrogen gas (mL) 50.0 mL Temperature of hydrogen gas (°C) 25.0°C Atmospheric Pressure (mmHg) 762 mm Hg Vapor pressure of water (mmHg) Partial pressure of hydrogen (mmHg) DATA ANALYSIS