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Questions in chemistry

[Terjawab] The solubility of calcium carbonate is [tex]$14 \frac{\text { milliene }}{\text { film }}$[/tex]. This rate means that 14 milligrams of calcium carbonate can dissolve in 1 liter of water. How much water would be required to fully dissolve 11 grams of calcium carbonate? Express your answer to the correct number of significant figures. One milligram is equal to 0.001 grams. I would take [$\square$] liters of water to fully dissolve [tex]$11$[/tex] grams of calcium carbonate

[Terjawab] How many grams of $Mg(OH)_2$ are in $7.5 \times 10^{23}$ formula units (f.un.) of $Mg(OH)_2$? Which part of the conversion factor goes in the green box? $6.02 \times 10^{23}$ f.un. 58.32 g 1 mole

[Terjawab] Write the electronic configurations of sulfur and write its position in the modern periodic table.

[Terjawab] A scientist is working with methane $(CH_4)$ and butane $(C_4H_{10})$. Which statement best compares these chemicals? A. They are two different types of molecules that each contain the same number of atoms. B. They are two different types of atoms that are each made up of a different number of elements. C. They are compounds made of the same two elements, but each contain different numbers of atoms. D. They are matter made of the same two compounds, but each contain different types of elements.

[Terjawab] 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]

[Terjawab] Is fluorine a metal or a nonmetal? How many valence electrons does a fluorine atom have?

[Terjawab] 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.

[Terjawab] 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

[Terjawab] Using the Bohr model, determine the number of valence electrons in an aluminum atom.

[Terjawab] How many grams of $Mg(OH)_2$ are in $7.5 \times 10^{23}$ formula units (f.un.) of $Mg(OH)_2$?