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relationship M1V1 = M2V2 to solve for the required volume of the more concentrated acid.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},449164,1790819072,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & 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answer.  \n1. The chart below shows the acid-base testing of four samples  \n.  \nBased on the chart, which sample or samples are acids?  \nA. Sample 1 only  \nB. Samples 2 and 4  \nC. Samples 1 and 3  \nD. Sample 4 only  \n2. The graph below represents the phase changes of water.  \nBased on the graph, what change occurred when ice at 0 degrees Celsius was heated at a constant rate?  \nA. Molecules broke apart into atoms.  \nB. Elements dissociated into ions.  \nC. Intermolecular attractions were decreased.  \nD. Chemical energy was stored.  \n3. When the volume of a gas is decreased at a constant temperature, the pressure increases because the molecules  \nA. move faster  \nB. move slower.  \nC. become heavier.  \nD. become lighter.  \nE. strike a unit area of the container more often.  \n4. Which property do the liquid phase and the gas phase of a substance have in common?  \nA. Both phases are highly compressible.  \nB. Both phases lack a definite shape.  \nC. Both phases have high densities.  \nD. Both phases have equal kinetic energy.  \n5. What volume of 12.0 M HCl is required to make 75.0 mL of 3.50 M HCl?  \nA. 21.9 mL  \nB. 0.560 mL  \nC. 257 mL  \nD. 75.0 mL  \n6. Air pollution from automobile exhaust is minimized by using electric cars powered by leadacid batteries. What will be a negative effect of using lead-acid batteries?  \nA. Toxic metal in the batteries will enter the environment.  \nB. Sulfuric acid in the batteries will generate electricity.  \nC. Oxygen and hydrogen will be produced by the batteries.  \nD. Dense and malleable metal will be used in the batteries.  \n7. Which set of tools will provide the most precise measurements for calculating the density of an irregularly shaped rock?  \nA. flask and beaker  \nB. flask and balance  \nC. balance and graduated cylinder  \nD. beaker and graduated cylinder  \n8. Water has a higher boiling point than compounds of similar molecular weight. Which of the following best explains this phenomenon?  \nA. Extensive hydrogen bonding exists between water molecules.  \nB. One of the natural isotopes of hydrogen, deuterium, is present in sufficient quantities to significantly raise the boiling point.  \nC. Water is a polar covalent compound.  \nD. Van der Waals forces exist between individual water molecules.  \nE. Water is largely dissociated leading to large electrostatic forces between individual water molecules.  \n9. According to IUPAC nomenclature, which of the following is the name for the compound shown below?  \nA. 3-butyl-2-(l-methylethyl)pentane  \nB. 2-isopropyl-3-butylpentane  \nC. 2-isopropyl-3-ethylheptane  \nD. 4-ethyl-2,3-dimethyloctane  \nE. 2-isododecane  \n10. What is the molarity of a 2.0-liter solution containing 58 grams of NaCl?  \nA. 0.50 M  \nB. 1.0 M  \nC. 2.0 M  \nD. 3.2 M  \n11. Which statement best describes the Bohr model of the atom?  \nA. Electrons are arranged in energy clouds.  \nB. Electrons have properties similar to waves.  \nC. Electrons orbit around the nucleus in set paths.  \nD. Electrons make up most of the mass of an atom.  \n12. The statements below explain why magnesium is preferred over zinc to protect underground iron pipes in terms of reactivity EXCEPT for:  \nA. Magnesium is more active than zinc  \nB. Magnesium atoms lose electrons more easily than zinc atoms  \nC. Zinc is more active than magnesium  \nD. Magnesium oxidized more readily than zinc  \n13. The electronic configuration of a particular neutral atom is 1s²2s²2p63s²3p² . What is the number of unpaired electrons in this atom?  \nA. 1  \nB. 2  \nC. 3  \nD. 4  \nE. 0  \n14. What volume will 50.2 grams of CO2(g) occupy at STP?  \nA. 1.14 liters  \nB. 19.6 liters  \nC. 25.6 liters  \nD. 98.2 liters  \n15. All of the following statements about carbon dioxide are true EXCEPT:  \nA. It can be prepared by the action of acid on limestone.  \nB. It is used to extinguish fires.  \nC. It dissolves in water at room temperature.  \nD. It sublimes rather than melts at 20 degrees Celsius and 1-at","cbCaim3h0AzMbeMJ","https://ap.wps.com/l/cbCaim3h0AzMbeMJ","pdf",193535,"English","# Practice Questions\n## Acid-base and phase change\n## Gas laws and measurements\n## Solutions and concentration\n## Atomic models and electron structure\n## Bonding and nomenclature","[{\"question\":\"How can you determine which samples are acids from an acid-base testing chart?\",\"answer\":\"Use the chart’s indicators for acidity and compare the results across samples to identify the ones classified as acids.\"},{\"question\":\"What happens to water at 0°C when ice is heated at a constant rate?\",\"answer\":\"As heat is applied, the phase changes from solid to liquid, which is reflected in the graph during the constant-temperature plateau.\"},{\"question\":\"How do you calculate molarity when preparing a diluted HCl solution?\",\"answer\":\"Use the dilution relationship M1V1 = M2V2 to solve for the required volume of the more concentrated acid.\"}]","NMAT Chemistry Practice Questions Set 1 | PDF",1790729466,23]