Question 2 (2 points) Which type of bond is an electrical attraction between fully charged (not partially- charged)atoms? Covalent bond. Van Der Waals bond Hydrogen bond. Ionic bond. Hybrid bond.
Devin knows(that his sample of strontium sulfate contains 2.4 moles. How many grams is this? Answer: square
Which of the following is a double replacement reaction? Ca(OH)_(2)+H_(2)SO_(4)arrow CaSO_(4)+2H_(2)O CH_(4)+2O_(2)arrow CO_(2)+2H_(2)O 8Fe+S_(8)arrow 8FeS Zn+H_(2)SO_(4)arrow ZnSO_(4)+H_(2)
Write the names of the following ionic compounds: NiSO_(4) square Fe_(2)(SO_(3))_(3) square Pb(NO_(2))_(2) square SnCO_(3) square
An ionic crystalline solid is hit with a hammer and shatters. Which of these is a property the solid will exhibit? malleability brittleness conductor
Question Carbohydrates usually have __ as many hydrogen atoms as carbon and oxygen atoms. Answer Input Soeling counts but capitalization doesn't square
Which of the following steps in solution formation is exothermic? Answer: A intermolecular forces. Overcoming the solute-solute B intermolecular forces. Overcoming the solvent-solute C intermolecular forces. Overcoming the solvent-solvent D intermolecular forces. Establishing the solute-solvent
P_(2)O_(3)+3H_(2)Oarrow 2H_(3)PO_(3) How many grams of diphosphorus trioxide, P_(2)O_(3) . are required to react completely with 4.0 moles H_(2)O ? molar mass P_(2)O_(3):109.94g/mol [?]gP_(2)O_(3)
What is the net ionic equation for the reaction of HCl with NaOH? HCl+NaOHarrow H_(2)O+NaCl H^++OH^-arrow H_(2)O 2H^++2Cl^-+Na_(2)^++2OH-arrow H_(2)O+Na_(2)^++2Cl^- H^++Cl^-+Na^++OH-arrow H_(2)O+Na^++Cl^-
A. Identify the type of attraction that holds covalent network solids together. B. Describe two of the following specific properties of covalent network solids: 1) general hardness 2) conductivity 3) effect on melting point
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 $
