Which of the following cycloalkanes has the most angle strain? Select the single best answer. Cyclopentane Cyclobutane C Cyclohexane Cyclopropane
A chemical or combination of chemicals that prevents pH changes is called a square
Which statement about alcohol is not correct? Can dissolve membrane lipids Can be used as a degerming agent and antiseptic Can denature proteins Is typically used as a sterilizing agent
What is the structure for the compound: Cl_(2) bent linear trigonal pyramidal tetrahedral
Write the formula for the acetate ion. formula: square
How many cycloalkane constitutional isomers are there with molecular formula C_(5)H_(10) Select the single best answer. (Stereoisomers are not constitutional isomers.) 4 3 5 2
The orbital hybridization on the carbon atoms in SCN- is sp^3 sp^2 sp. sp^3d^2
What is the molarity of a solution that contains 6 moles dissolved in 2 L of water? 12M 3M 12M 0.3M
There were issues with Daguerre's process-which apply? unreproducible Small Toxic process All of these
Which of the following characteristics or postulates are NOT significant in collision theory? Have energy equalto or greater than the energy required to rearrange the atoms Proper orientation The atoms must be hard spheres None of these options
10. Which types of bonds tend to have the highest bond energy? 11. Which types of bonds tend to have the lowest bond energy?
4 7 Add an answer item! Add an answer item! Answer Bank carbon iodine
10. What is the mole ratio of $MgCl_{2}$ to HCI $\underline {\quad }:\underline {\quad }$
Which action effectively increases the reactant concentration and increases the reaction rate? decreasing pressure heating the reactant mixture increasing pressure cooling the reactant mixture
Matter can undergo physical or chemical changes. Which of these are examples of chemical changes? Select TWO correct answers. A. Freezing water B. Milk souring C. Iron melting D. Dry ice sublimating E. Cooking an egg
What is the most common substance found in ecstasy? rat poison tar glass nicotine
Which action would speed up the reaction for the chemical reaction $CH_{3}Br+OH^{-}\rightarrow CH_{3}OH+Br^{-}$ increasing the $CH3Br$ concentration reducing the $OH-$ concentration cooling the reactant mixture reducing the pressure of the reactant mixture
Which action decreases the activation energy of a reaction? decreasing the temperature removing reactant molecules removing a catalyst adding a catalyst
Convert 89000 g $Pb(NO_{3})_{2}$ to atoms
Given the following reactions and corresponding $\Delta H$ values, find the $\Delta H$ (to the nearest whole \#) for the reaction: $H_{2}SO_{4}(l)\rightarrow SO_{3}(g)+H_{2}O(g)$ $H_{2}S(g)+2O_{2}(g)\rightarrow H_{2}SO_{4}(l)$ $\Delta H=-235kJ$ $H_{2}S(g)+2O_{2}(g)\rightarrow SO_{3}(g)+H_{2}O(l)$ $\Delta H=-207kJ$ $H_{2}O(l)\rightarrow H_{2}O(g)$ $\Delta H=44kJ$ $\square $
