1. What compounds are in the following?Sodium bicarbonateBaking powderBaker's ammonia2. What is the purpose of the Gas Pressure Sensor for our measurements?3. What is the purpose of using baking soda or baking powder?4. Simona set up an experiment to measure the volume of 5.0 g of CO2 gas given off during areaction at 298 K. She measures the pressure to be 5 kPa. What is the volume of gas?

What compounds are in the following?Sodium bicarbonate: It is composed of sodium ions (Na+) and…

Answered: 1. What compounds are in the following?…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.2PAE

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1. A 0.68 gram sample of a volatile liquid was heated to 358 K. The gas occupied 265 mL of space at a pressure of 0.95 atm. What is the molecular weight of this gas? PV = nRT and R = 0.082 atmL/moleK. (Make sure that all your units agree/match R)2. An aspirin sample, 0.62 grams, was titrated with 28 mL of 0.105 M NaOH solution. What is the percent purity of this aspirin sample? (MM of Aspirin = 180. g/mol)3. A sample of hydrate was heated thoroughly. How many waters of hydration are there if the anhydrous salt had a dry mass of 12 grams and a molar mass of 185 g/mol? The mass of water evaporated from the hydrate was 5.0 g.4.A sample of water (80 grams) had a temperature change of 6. ℃. What was the heat change of this sample? (q = m c ΔT, c = 4.18 J/ g ℃)5. A 6.0 gram sample of epsom salt, MgSO4 ·nH2O, was heated. After heating, 2.9 grams of anhydrous salt remained. How many waters of hydration does epsom salt contain?6. What is the theoretical yield of aspirin if you started your…
chemical equation: What mass of precipitate will form if 1.50 L of highly concentrated Pb(ClO3)₂ is mixed with 0.500 L 0.300 M Nal? Assume the reaction goes to completion. the Balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous Nal. Include phases. $ 4 mass of precipitate: R F4 V % 5 T F5 G B ^ 6 MacBook Air F6 Y H & 7 N F7 U * 00 8 M DII F8 ( 9 DD F9 O V ) 0 F10 P ^. 1 F11 + g F12 20 del
Give the overall balanced equation. Assume that all concentrations are 1.0M and that all partial pressures are 1.0atm. Cr³+ (aq) + Cl₂(g)Cr₂0₂2 (aq) + Cl¯(aq)
2. A. Write a balanced chemical equation for the reaction, in aqueous solution, between silver nitrate and sodium bromide. A fine pale yellow precipitate is observed from this mixture. Which compound is the precipitate? B. How many moles of air are present in the lungs if they occupy a volume of 5.0 L at 37°C and 725 mmHg? How many molecules of air is this?
2. Suppose the concentration of CO₂ in the atmosphere is 360 ppm. Convert this to g/m³ when temperature and pressure is 20°C and 100hPa..
15. Carbon dioxide makes up approximately 0.04% of Earth's atmosphere. If you collect a 2.0-L sample from the atmosphere at sea level (101.33 kPa) on a warm day at 27 °C, how many CO2 molecules are in your sample? * a. 5 x 10^20 b. 5 x 10^21 O c. 5x 10^22 d. 5 x 10^23
A sample (50 mL) of a bottled water was added to a 100 mL volumetric flask and then diluted to the mark. From this stock solution, 50 mL was taken, added to a 100 mL volumetric flask and diluted to the mark. Final concentration of the serial dilution: 587.7161ppm. 1. what is the concentration in the original bottle (ppm)
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25 mL of hydroiodic acid generates 1.20 L of H2 gas at STP conditions when combined with excess zinc. What is the concentration (mol/L) of the hydroiodic acid? Zn + 2HI -> Znl2 + H2
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