If the leak is allowed to continue, how many kilograms of Cl are emitted into the atmosphere each year? CO2 b. NiCl2 c. NaI d. PCl3, Classify each compound as ionic or molecular.a. Calculate theempirical formula of the compound. chromium(III) phosphate trihydrated. CBr4 d. Ca(NO3)2, Calculate the number of moles in each sample.a. (Refer to the nomenclature flowchart found in the Key Concepts section of the Chapter in Review.)a. How does the Lewis model for covalent bonding account for why certain combinations of atoms are stable while others are not? In Figure P1.49, find (a) the side opposite , (b) the side adjacent to . Examples include such familiar substances as water and carbon dioxide. Calculate the empirical formula of the compound. Determine the empirical formula of phosphorus selenide. 1 - A very good 197-Ib weight lifter lifted 192 kg in... Ch. 1 - Indicate whether each of the following can be... Ch. The elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Why is the formation of solid sodium chloride from solid sodium and gaseous chlorine exothermic, even though it takes more energy to form the Na+ ion than the amount of energy released upon formation of Cl-? CuSO4c. Mg(BrO3)2 # 6H2Od. 1 glucose molecule (C6H12O6), Calculate the mass (in g) of each sample.a. These air conditioners are recharged from stockpiled supplies of CFC-12. (Refer to the nomenclature flowchart found in the Key Concepts section of the Chapter in Review.)a. A compound of molar mass 177 g>mol contains only carbon, hydrogen, bromine, and oxygen. To... Ch. HNO3. 1 - Classify each of the following changes as physical... Ch. cobalt(II) bromide, Determine the chemical formula of each compound and use it to calculate the mass percent composition of each constituent element.a. Find the molecular formula of each compound.a. It indicates the actual numbers and types of atoms in a molecule. 2.677 g Ba, 3.115 g Brc. 1 - Many of the items you purchase are mixtures of... Ch. Find the molecular formula. CuI2 e. HgBr2 f. CrCl2, Name each ionic compound.a. 9.85 * 1019 CCl2F2 moleculesc. 38.2 g KNO3d. A 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur is burned in excess oxygen to yield 4.23 g of CO2 and 1.01 g of H2O. 1 - The density (d) of a substance is an intensive... Ch. potassium chromateb. Which fertilizer has the highest nitrogen content? ), Lead is found in Earth's crust as several different lead ores. The American Dental Association recommends that an adult female should consume 3.0 mg of fluoride (F-) per day to prevent tooth decay. How do you name an ionic compound if it contains a polyatomic ion? *Response times vary by subject and question complexity. Calculate the molecular formula of the compound. potassium hydroxidef. Find the empirical formulas of the other two compounds. 1 - How are the molecules in oxygen gas, the molecules... Ch. oxygend. How does the Lewis model for covalent bonding account for the relatively low melting and boiling points of molecular compounds (compared to ionic compounds)? Which class has the largest individuals? What is the molecular formula? A mixture of carbon and sulfur has a mass of 9.0 g. Complete combustion with excess O2 gives 23.3 g of a mixture of CO2 and SO2. The density of water is 1.0 g>cm3. 1 - How many significant figures are contained in each... Ch. Which kinds of conversion factors are inherent in chemical formulas? Watch the recordings here on Youtube! silver and chlorineb. Calculate the mass of fluorine (in g) contained in 55.5 g of copper(II) fluoride.20.8 $\mathrm{gF}$. Mg and Ic. Missed the LibreFest? Find its molecular formula. 0.1187 g C8H18d. It has a carboxyl g... A hospital patient was regularly found to be intoxicated. Explain how the information in a chemical formula can be used to determine how much of a particular element is present in a given amount of a compound. A compound is a molecule made of atoms from different elements. Have questions or comments? A phosphorus compound that contains 34.00% phosphorus by mass has the formula X3P2. Researchers obtain the following data from experiments to find the molecular formula of benzocaine, a local anesthetic, which contains only carbon, hydrogen, nitrogen, and oxygen. Na and Sd. NO2d. 1 - Is a meter about an inch, a foot, a yard, or a... Ch. The molar mass is determined to be 136.26 g>mol. Read “The Molecular Revolution" box in this chapter on seeing atoms. 1 - Classify the six underlined properties in the... Ch. 4.88 mol H2O2b. 1 - How many milliliters of a soft drink are contained... Ch. What characteristics must Earths core have to generate a magnetic field? Chemical formula. calcium fluoridee. 1 - Classify the following sets of measurements as... Ch. SnO b. Cr2S3 c. RbI d. BaBr2, Name each ionic compound.a. 1 - As stated in the text, convincing examples that... Ch. CF2Cl2 b. CCl4 c. PtO2 d. SO3, Determine the empirical formula for the compound represented by each molecular formula.a. CO b. NI3c. calcium and oxygenb. hydrogenb. According to the Lewis model, what is a chemical bond? Water (H 2 O) is a molecular compound because it is a substance made from more than one kind of element that is held together with molecular bonds. For more information contact us at [email protected] or check out our status page at https://status.libretexts.org. NOc. Find the empirical formula of the compound. Have you ever seen... Ch. Give an example. What... Ch. 1.25 kg CO2c. Calculate the empirical formula for each compound.a. Calculate the mass percent composition of nitrogen in each of the fertilizers named in this problem. Calculate the empirical formula of the hydrocarbon. 1 - Calculate the density of aluminum if 27.6 cm3 has... Ch. Have each member of your group list one similarity or difference between the naming conventions for ionic and the naming conventions of molecular compounds.