51.the molarity is 3.52.the molality is 1.7m53.weak electrolytes are ionic compounds that partially dissociate in water.54.Activation energy is the minimum energy that colliding particles must have in order to react.55.the temperature will absorb the heat when increased from equilibrium.56. In a reaction that makes more than it consumes, the reaction makes more reactants as the pressure increases.57. Entropy is the measure of disorder of a system.58. Acids taste sour, can change the color of an acid-base, and can be strong or weak electrolytes in an aqueous solution.59. Bases taste bitter, will change color of an acid-base, and can be strong or weak electrolytes in aqueous solutions.60. The molality of a solution of water and KCl if the freezing point is -30 is .8.61.The quantity of heat required to change the temperature of 1 g of a substance by 1 degree Celsius is defined as specific heat.62. 2.62 joules of energy are needed to warm 4.37 g of silver by 2.5 degrees Celsius.63. -218 kj/mol is the standard heat of reaction.64. -296.7 kj/mol is the change in enthalpy for sulfur dioxide with oxygen.65. LiOH is the Arrhenius base because it gives off hydroxide ions when dissociated in water.66. A dry cell is a commercial voltaic cell in which the electrolyte is a moist paste; despite their name, the compact, portable batteries used in flashlights are dry cells67. In a hydrogen-oxygen fuel cell, oxygen diffuses through the cathode. Reduction always takes place at the cathode. Oxygen is reduced.68. Carbon has 4 valence electrons. 69. To complete the following equation, a beta particle is required147N+0-1e 146C + 11H70. Uranium-238 can be the most useful in dating objects thought to be millions of years old.71. A reaction in which small nuclei combine to form a heavier nuclei is called nuclear fusion.72.Alkanes are hydrocarbons that contain single bonds73.Lewis acids accept electron pairs to form a covalent bond. 74.H20 can act as an acid and a base.75. H20 is the oxidizing agent76. The Cu electrode is negative.77. In a voltaic cell, electrical energy is produced by spontaneous redox reactions within the cell.78. A description for a solution with a hydroxide-ion concentration of 1*10-4M is acidic. 79. The change in atomic number when an atom emits an alpha particle is -2.80. The change in atomic number when an atom emits a beta particle is that it decreases by 1. 81.The atomic number is unchanged when gamma radiation is emitted.82.A reduction reaction occurs when iron oxide becomes iron.83. Cu=Cu2++2e- is an oxidation reaction.84. In 2Na+SNa2S, the reducing agent is Na. 85. The most important way to classify organic compounds is by their functional groups.86.The fundamental unit of life is the atom.87. The two products of photosynthesis are oxygen and glucose. 88 .Peptide bonds are between carbonyl groups89. To complete the nuclear reaction, an alpha particle is needed. 22286Rn 21884Po + 42He90. To solve the equation, Chromium-56 is needed. 5625Mn5624Cr+0-1e.