Zn(OH)_(2) has a K_(sp) of 4.5times 10^-17 If you have a solution of Zn(OH)_(2) that has a hydroxide ion concentration equal to 4.6times 10^-6M what is the solution? unsaturated supersaturated No answer text provided. saturated
Write the full electron configuration for P^3- E full electron configuration: square What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol: square
Which of the following represents a chemical change? Rocks being smoothed by rapid water movement The pink color of a rose Decomposition of stone due to acid rain
Write net ionic equation for the reaction between nitric acid and calcium hydroxide. Express your answer as a chemical equation Identify all of the phases in your answer. square A chemical reaction does not occur for this question.
Consider the reaction N_(2)(g)+3H_(2)(g)arrow 2NH_(3)(g) If the concentration of the product NH_(3) decreased, which way would the chemical system shift? Left Right It would not shift.
A chemical system is in equilibrium when free energy exists at __ the highest possible value the lowest possible value equal proportions
A flexible container holding 1.25 moles of a gas contracts from 25.0 L to 10.0 L when some gas is removed.The pressure and temperature remain the same throughout. How many moles of gas are in the contracted container? n_(2)=[?] mol
What characterizes a strong acid or base? ionic bonding presence of a hydroxide or hydrogen ion complete ionization in water polar covalent bonding
What is pH? the positive logarithm of the hydroxide ion concentration the positive logarithm of the hydrogen ion concentration the negative logarithm of the hydrogen ion concentration the negative logarithm of the hydroxide ion concentration
Which of the following is a property of an acid? sour taste strong color unreactive nonelectrolyte
What is the major ion in seawater? sodium chloride magnesium sulfate
5. How can 100. mL of sodium hydroxide solution with a pH of 13.00 be converted to a sodium hydroxide solution with a pH of 12.00 ? (A) By diluting the solution with distilled water to a total volume of 200 mL (B) By diluting the solution with distilled water to a total volume of 1.00 L (C) By adding 100 mL of 0.10 MHCI (D) By adding 100 mL of 0.10 MNaOH
12. How does the concept of electron transfer explain why sodium and chlorine react to produce sodium chloride?(Hint: Think about the movement of electrons between sodium and chlorine atoms during the reaction.)
2. Use Passage 1 to answer question below. Suppose that in Experiment 2 a solution at a pH of 7.5 had been tested. Based on the results of Experiment 2, the percent recovery of cadmium for that solution would most likely have been: F. between $48\% $ and $80\% $ G. between $80\% $ and $88\% $ H. between $88\% $ and $95\% $ J. between $95\% $ and $100\% $ F G. H. J.
1.Use Passage 1 to answer question below. Based on the description of Experiment 1, when was the graphene separated from the sample liquid by centrifugation? A. Immediately before placing the sample in the water bath B. Immediately after removing the sample from the water bath C. Immediately before the percent recovery of the cadmium was determined D. Immediately after the percent recovery of the cad- mium was determined A B C D
Which statement about asbestos fibers is correct? A. All asbestos fibers are visible without magnification B. Asbestos fibers can be identified by color and texture alone C. Some asbestos fibers are extremely small and require laboratory testing to confirm their presence D. Asbestos fibers are always thicker than a human hair
Which of the following statements describes how water differs greatly from many other substances? It is less dense in its solid form than liquid form. It is a polar covalent molecule. It can change to solid liquid and gas phases. It is comprised of two different elements.
Name the following ionic compounds. Make sure you are in text mode $(''Tt'')$ Do NOT put a space between metal and charge in parentheses if naming a Type II metal ionic compound (i.e. iron(III)) a. $CoCl_{2}$ $\square $
3. How many grams of $Fe_{2}(SO_{4})_{3}$ will be produced from 4.25 moles of Fe? $2Fe+3H_{2}SO_{4}\rightarrow 1Fe_{2}(SO_{4})_{3}+3H_{2}$
Red litmus paper turning blue indicates the prescence of __ ? $Ni(II)$ $Ca(II)$ $Fe(III)$ Ammonium Ion
