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Questions in chemistry
📝 Answered - Use your data, the equation to the right, and the specific heat of water ([tex]$4.184 J / g ^{\circ} C$[/tex]) to compute the specific heat values of each metal. Use a calculator and round to the nearest hundredth place. Aluminum: [tex]$c=$[/tex] $\square$ [tex]$J / g ^{\circ} C$[/tex] Copper: [tex]$c=$[/tex] $\square$ [tex]$3 / g ^{\circ} C$[/tex] Iron: [tex]$c=$[/tex] $\square$ [tex]$J / g ^{\circ} C$[/tex] Lead: [tex]$c=$[/tex] $\square$ [tex]$30^{\circ} C$[/tex] Be sure to record all of these values in the data table. [tex]$c_{\text {metal }}=\frac{-c_{\text {water }} m_{\text {water }} \Delta T_{\text {water }}}{m_{\text {metal }} \Delta T_{\text {metal }}}$[/tex]
📝 Answered - Is fluorine a metal or a nonmetal? How many valence electrons does a fluorine atom have?
📝 Answered - How can the rate constant be determined from the rate law? A. The rate constant can be calculated from the exponents of the concentrations. B. The rate constant is the reaction rate multiplied by the concentration terms. C. The rate constant is the reaction rate divided by the concentration terms. D. The rate constant is the same thing as the reaction rate for the reaction.
📝 Answered - An unknown compound was found to have the molecular formula C6H₁₂O₂. To which compound classes could the compound belong? Check all that apply. The possible functional groups are: ☐ ester ☐ carboxylic acid ☐ alcohol ☐ phenol ☐ amide ☐ ether
📝 Answered - Using the Bohr model, determine the number of valence electrons in an aluminum atom.
📝 Answered - How many grams of $Mg(OH)_2$ are in $7.5 \times 10^{23}$ formula units (f.un.) of $Mg(OH)_2$?
📝 Answered - How can the rate constant be determined from the rate law? A. The rate constant can be calculated from the exponents of the concentrations. B. The rate constant is the reaction rate multiplied by the concentration terms. C. The rate constant is the reaction rate divided by the concentration terms. D. The rate constant is the same thing as the reaction rate for the reaction.
📝 Answered - Which chemical or physical change is an exothermic process? A. the baking of cookies B. a glass C. the combustion of gasoline D. the evaporation of water from a pool E. the cold pack reaction [tex]$\left( NH _4 NO _3+ H _2 O +\right.$[/tex] heat [tex]$\rightarrow NH _4 OH + HNO _3$[/tex] )
📝 Answered - Which property would cesium most likely have? A. It is hard. B. It is ductile. C. It is a gas. D. It has low reactivity.
📝 Answered - Use the mass and density data to calculate the volume of corn syrup to the nearest tenth. Mass of corn syrup = 57.3 g Density of corn syrup = 1.38 g / mL
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