Concept explainers
(a)
Interpretation:
The mass of S atoms in
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
Mass ratio of a compound with formula AB can be determined as follows,
(b)
Interpretation:
The mass of S atoms in
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
Mass ratio of a compound with formula AB can be determined as follows,
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Chemistry In Context
- Ammonium nitrate, NH4NO3, which is prepared from nitric acid, is used as a nitrogen fertilizer. Calculate the mass percentages of the elements in ammonium nitrate (to three significant figures).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_forwardCalculate the formula weights of the following compounds, using a table of atomic weights. Give the answers to three significant figures. a. nitrogen dioxide, NO2; b. glucose, C6H12O6; c. sodium hydroxide, NaOH; d. magnesium hydroxide. Mg(OH)2.arrow_forward
- Hydrogen cyanide, HCN, is a volatile, colorless liquid with the odor of certain fruit pits (such as peach and cherry pits). The compound is highly poisonous. How many molecules are there in 56 mg HCN, the average toxic dose?arrow_forwardBenzoic acid is a white, crystalline powder used as a food preservative. The compound contains 68.8% C, 5.0% H, and 26.2% O, by mass. What is its empirical formula?arrow_forwardHow many grams of nitrogen, N, are there in a fertilizer containing 48.5 g of ammonium nitrate and no other nitrogen-containing compound? See Exercise. 3.7 for the percentage composition of NH4NO3.arrow_forward
- Nitric acid, HNO3, is a colorless, corrosive liquid used in the manufacture of nitrogen fertilizers and explosives. In an experiment to develop new explosives for mining operations, a sample containing 28.5 g of nitric acid was poured into a beaker. How many moles of HNO3 are there in this sample of nitric add?arrow_forwardercise 8.6 The substance Teflon, the slippery coating on many frying pans, is made from the C2F4 molecule. Calculate the number of C2F4 units present in 135 g of Teflon.arrow_forwardercise 8.4 Polyvinyl chloride (called PVC), which is widely used for floor coverings (“vinyl’) and for plastic pipes in plumbing systems, is made from a molecule with the formula C2H3Cl . Calculate the molar mass of this substance.arrow_forward
- trong>Exercise 8.9 Sevin, the commercial name for an insecticide used to protect crops such as cotton, vegetables, and fruit, is made from carbamic acid. A chemist analyzing a sample of carbamic acid finds 0.8007 g of carbon, 0.9333 g of nitrogen, 0.2016 g of hydrogen, and 2.133 g of oxygen. Determine the empirical formula for carbamic acid.arrow_forwardThe main reaction of a charcoal grill is C(s) + O2(g) CO2(g). Which of the statements below are incorrect? Why? a 1 atom of carbon reacts with 1 molecule of oxygen to produce 1 molecule of CO2. b 1 g of C reacts with 1 g of O2 to produce 2 grams of CO2. c 1 g of C reacts with 0.5 g of O2 to produce 1 g of CO2. d 12 g of C reacts with 32 g of O2 to produce 44 g of CO2. e 1 mol of C reacts with 1 mol of O2 to produce 1 mol of CO2. f 1 mol of C reacts with 0.5 mol of O2 to produce 1 mol of CO2. g harrow_forwardIn an experiment, 7.36 g of zinc was heated with 6.45 g of sulfur (Figure 3.16). Assume that these substances react according to the equation 8Zn+S83ZnS What amount of zinc sulfide was produced?arrow_forward
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningGeneral 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 Learning