Čj pro ZNCI, + H2 3. Zn + 2HCI How many moles of hydrogen are produced from the reaction of three moles of zinc with an excess of hydrochloric acid? 3Co, + 4H,0 4. CH, + 50, How many moles of oxygen are necessaty to react completely with tour moles of propane (CH)? 5 KPO, + AKNO), How many moles of potassium nitrate are produced when two moles of potassium phosphate react with two moles of aluminum nitrate? - 3KNO, + AIPO,

Čj pro ZNCI, + H2 3. Zn + 2HCI How many moles of hydrogen are produced from the reaction of three moles of zinc with an excess of hydrochloric acid? 3Co, + 4H,0 4. CH, + 50, How many moles of oxygen are necessaty to react completely with tour moles of propane (CH)? 5 KPO, + AKNO), How many moles of potassium nitrate are produced when two moles of potassium phosphate react with two moles of aluminum nitrate? - 3KNO, + AIPO,

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 126CP: You have two distinct gaseous compounds made from element X and element Y. The mass percents are as...

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Cocaine (C17H21O4N) is a natural substance found in the leaves of the coca plant, which has been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the USA either as a pure compound or as the hydrochloride salt (C17H21O4NHCl). At 25oC, the salt is very soluble in water (2.50 kg/L), but pure cocaine is much less so (1.70 g/L). What is the maximum amount of salt (in gram) that can dissolve in 50.0 mL of water? [1 mark.] When a 25 mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water (in liters) is needed additionally to dissolve the formed pure cocaine? Round your final answer off to two decimal points. C17H21O4NHCl(aq) + NaOH(aq) → C17H21O4N(aq) + H2O(l) + NaCl(aq)
Carbon dioxide emissions associated with a one-night stay in a hotel room are calculated at 28.98 kg of CO2 per room day for an average hotel. The 250 rooms of your hotel are all occupied for two days during a college football game. How much CO2 did the guests and hotel release into the atmosphere? Round your answer to the nearest whole number. kgs
For the reaction C2H4 + 3O2 ---> 2CO2 + 2H2O, does this mean that ten (10) grams of CO2 produced reuired 0.345 mol O2?
Cocaine (C₁₇H₂₁O₄N) is a natural substance found in cocaleaves, which have been used for centuries as a local anestheticand stimulant. Illegal cocaine arrives in the United States eitheras the pure compound or as the hydrochloride salt(C₁₇H₂₁O₄NHCl). At 25C, the salt is very soluble in water(2.50 kg/L), but cocaine is much less so (1.70 g/L). (a) Whatis the maximum amount (in g) of the salt that can dissolve in50.0 mL of water? (b) If the solution in part (a) is treated withNaOH, the salt is converted to cocaine. How much additionalwater (in L) is needed to dissolve it?
Cocaine(C17H21O4N) is a natural substance found in the leaves of the coca plant, which has been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the USA either as a pure compound or as the hydrochloride salt(C7H21O4NHCl). At 25 degrees celsius, the salt is very soluble in water(2.59kg/L), but pure cocaine is much less so(1.70g/L) a. What is the maximum amount of salt in grams that can dissolve in 50.0mL of water? b. When a 25mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water in liters is needed additionally to dissolve the formed pure cocaine,
Methane is produced in the human gut during digestion. As it passes through the digestive tract, it collects at thelower end and is emitted as flatulence. About 10% of a fart is composed of methane.__CH4 + __O2 → __ CO2 + __H2Oa) The average human fart contains 0.00643g of methane gas. Ifyou were to light said fart (and you SHOULD NOT), what mass ofoxygen would combust along with it?b) People, on average, pass 0.75L of gas per day. This is about0.0536g of methane per 24 hour period (remember, only ~10% ismethane). What mass of water could be generated by one personigniting their “methane emission”? c) How many water molecules is this? (SHOW ALL WORK IN TRAIN TRACKS)
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for part a) can someone show how we get from 35265405 moles to 564.24tonne/year
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Calculate the ratio between the moles of magnesium used and the moles of oxygen used. Express this ratio in simplest whole-number form. Mass of oxygen = 0.49g- 0.33g= 0.16gNumber of moles = given mass / molar massNumber of moles of oxygen = 0.16/ 16 = 0.01 molMolarmass of magnesium = 24.3gMoles of magnesium = 0.33g / 24.3g = 0.0135 molMoles of magnesium 0.0135 1.35 3 4------------------------ = _____________ = ____________ x ________ = ___Moles of oxygen 0.01 1 3 3 The ratio between the moles of magnesium used and the moles of oxygen uses is 4/3. Based on your experimental data, write the empirical formula for magnesium oxide. Is this the molecular formula or the simplest formula? Explain how you know this.