Concept explainers
(a)
Interpretation:
Molar mass of ozone has to be determined.
Concept Introduction:
Molar mass of a substance is the mass in grams of one mole of the substance. Unit of molar mass is g/mol.
Molar mass of
(b)
Interpretation:
Molar mass of dinitrogen monoxide has to be determined.
Concept Introduction:
Molar mass of a substance is the mass in grams of one mole of the substance. Unit of molar mass is g/mol.
Molar mass of
(c)
Interpretation:
Molar mass of
Concept Introduction:
Molar mass of a substance is the mass in grams of one mole of the substance. Unit of molar mass is g/mol.
Molar mass of
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Chapter 4 Solutions
Chemistry In Context
- A flask equipped with a valve contains 3.0 mol of H2 gas. You introduce 3.0 mol of Ar gas into the flask via the valve and then seal the flask. a What happens to the pressure of just the H2 gas in the flask after the introduction of the Ar? If it changes, by what factor does it do so? b How do the pressures of the Ar and the H2 in the flask compare? c How does the total pressure in the flask relate to the pressures of the two gases?arrow_forwardEXERCISE 1: A quantity of gas occupies a volume of 80 cm3 at a pressure of 750 mm Hg. What volume will it occupy at a pressure of 1.2 atm if the temperature does not change?arrow_forward[References] Cyclopropane, a gas that when mixed with oxygen is used as a general anesthetic, is composed of 85.7% C and 14.3% H by mass. If the density of cyclopropane is 1.88 g/L at STP, what is the molecular formula of cyclopropane? Submit Answer Try Another Version 3 item attempts remainingarrow_forward
- Research the most recent measures taken by countries around the world to reduce CFCs in the atmosphere since the Montreal Protocol. Writea short report describing the Montreal Protocol and more recent environmental measures to reduce CFCs.arrow_forwardExercise #105 Methanol (CH3OH) can be synthesized by the reaction: CO (g) + 2 H2 (g) → CH3OH (g) What volume (in L) of H2 at a temperature of 355 K and a pressure of 738 mm Hg is needed to produce 35.7 g of CH;OH?arrow_forwardSKILL #3 CONVERSIONS WITH MOLE RATIO C,Hale + 50o → 3 CO, (3)8, 2(g) 2(g) + 4 H,0, '2°(g) How many moles of 0, are required to produce 17.8 moles of CO,?arrow_forward
- EXERCISE 10: A gas occupies a 1.5 liter container of constant volume at 50ºC and 550 mmHg. At what temperature in ° C will the gas reach if the internal pressure is increased to 770 mmHg?arrow_forwardWorked example 3 Determine the mass of oxygen (0,) consumed in the reaction from Worked example 2 on page 205. Step 1 Write a balanced equation 2H,(g) + 0,(g) → 2H,0(g) Step 2 Write down the 2 moles + 1 mole - 2 moles mole'ratio for the equation Step 3 Calculate molar M (O,) = [(2 x 16)] = 32 g.mol M„(H,) = [(1 x 2)] = 2 g.mol m(H,) is 8,00 g, so number of moles of H, is: masses Step 4 Calculate number of moles 8,00 g = 2 g.mol- = 4 moles Step 5 Write down the 2 moles H, reacts with 1 mole O,, therefore: moles in the moles H, reacts with 2 moles O, reaction Mass of O, consumed: m =n x M = 2,00 mol x 32 g.mol- = 64 g 64 g of oxygen is consumed. Step 6 Determine the mass of the product(s) Step 7 Conclusion Activity 1 Perform stoichiometric calculations In the following chemical reaction: 2H,(g) + O,(g) → 2H,O(g) 1.1 How many moles of H,0 will be produced from 6 moles of O,? 1.2 How many moles of H, will'react with 40 g of 0,? 1.3 How many grams of H,O will be produced by 18 g of H,? Zinc…arrow_forwardConsidering the fact that N2 makes up about 80% of the atmosphere, why dont animals use the abundant N2 instead of O2 for biological reactions?arrow_forward
- Gas exercise: What volume does a gas occupy at 980 mmHg, if the container finally has a pressure of 1.8 atm and the gas is compressed to 860 cc?arrow_forwardA sample of a gaseous substance at 25C and 0.862 atm has a density of 2.26 g/L. What is the molecular weight of the substance?arrow_forwardInitial Knowledge Check Question 12 Melanie V In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce gaseous ammonla. This reaction Is now the first step taken to make most of the world's fertilizer. Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 183. liters per second of dinitrogen are consumed when the reaction is run at 178. °C and the dinitrogen is supplied at 0.37 atm. Calculate the rate at which ammonia is being produced. Glve your answer in kilograms per second. Round your answer to 2 significant digits. alo kg I Don't Know Submit 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center| Accessibility O 1:13 enovoarrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning