Complete the statements for the behavior indicated by the arrow in graph below. Use the +/- superscripts to indicate left/right (or below/above). For example to communicate "y approaches 2 from below" we would type "2^-" in the box corresponding to x →. 5+ 4 3 2 As x → y→ 2 3 4 5
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- What does it mean forward or backward and does the k=5.0×10^23 even play a role in this1. (answer the questions in the tan boxes in the tables below each question) A student conducted an investigation to determine the effect of water temperature on the amount of sugar that dissolves in a beaker of water. Identify components for trial 1 of this investigation. Beaker Number 1 2 3 4 Amount of Water (mL) 100 100 100 100 Amount of Water (mL) Trial 1 Temperature of Temperature of Amount of Sugar Sugar (°C) Water (°C) Dissolved (g) 20 20 20 20 Temperature of Sugar 5 10 15 20 185 189 194 204 Temperature of Water Terms Variable Constant Amount of Sugar DissolvedConstruct the expression for Kc for the following reaction. 1 3NO(g) = N20(g) + NO2(g) Construct the expression for Kc for the following reaction. 2 X 4HCI(aq) + O2(g) = 2H20(1) + 2C12(g) > Construct the expression for Kc for the following reaction. 3 CH4(g) + 2H2S(g) = CS2(g) + 4H2(g) Construct the expression for Kc for the following reaction. 4 X 2Cu*(aq) + Zn(s) = 2Cu(s) + Zn²*(aq) >
- 3. Corev was synthesizing a chemical in the laboratory. He used different purification techniques to try to obtain a pure compound. The melting point of the pure compound is 65 degrees. When he tested his compound in the lab the melting point he obtained was 62-68 degrees. Is the product he synthesized pure? 4A company was low on copper metal and decided to use some chemical additives just this once to some copper wiring they were installing in a house. How will this impact the conductivity of the wiring?The solubility of a substance is 30 g per 100 mL of water at room temperature, 50 g per 100 mL of water at 80 ∘C. A student mixed 40 g of this substance with 100 mL of water at room temperature (stage 1), and then heated the mixture to 80 ∘C (stage 2). The mixture is then slowly cooled down to room temperature without any precipitation (stage 3). Finally, the student added a small crystal to the mixture and saw precipitation took place. This mixture is supersaturated at stage 2 heterogeneous at stage 1 homogeneous at stage 4 saturated at stage 3Concentration (mg/ml) Time (min) 8.5 0.5 6.8 5.4 1.5 4.0 2 3.2 2.5 2.5 3 What will be the slope of the line using the given first and second values? What will be the y-intercept, still using the given first and second values? Completely state the equation of the line. nlcot olN5
- The solubility of PbCO3 in water at 25°C is measured to be 7.3x10−5g/L. Use this information to calculate Ksp for PbCO3. Round your answer to 2 significant digits.Sam drops a sugar cube into a jar with hot water and a sugar cube into a jar with cold water. Both jars have the same volume of water. He drops the sugar cubes at the same time and then observes how much of them dissolves in two minutes. What will be the result of Sam’s experiment, and which statement should he use as his conclusion? A A greater amount of sugar dissolved in hot water because temperature is directly proportional to the solubility rate of sugar in water. B Temperature does not affect the solubility rate of the sugar cube in water because sugar dissolves equally in both cold and hot water. C A greater amount of sugar dissolved in hot water because temperature is inversely proportional to the solubility rate of sugar in water. D A smaller amount of sugar dissolved in cold water because temperature is inversely proportional to the solubility rate of sugar in water.Current Attempt in Progress From the curves shown in Animated Figure and using the following Equation, determine the rate of recrystallization for pure copper at the several temperatures. Make a plot of In(rate) versus the reciprocal of temperature (in K-1). (a) Determine the activation energy for this recrystallization process. (See Section FACTORS THAT INFLUENCE DIFFUSION.) (b) By extrapolation, estimate the length of time required for 50% recrystallization at room temperature, 20°C (293 K). (a) i kJ/mol (b) i days
- Is the concentration of the solution prepared in the question below only approximate because sodium hydroxide is not a primary standard? * Find the mass in grams of sodium hydroxide that will be required to prepare a solution with a concentration of 0.500 mol·dm⁻³ in a 250 cm³ volumetric flask. [Round the answer to three decimal places. Do not type in the unit. Use a decimal point.] *Dissolution Distilled H20 Concentration 0.01 M HCI Concentration (mg/ml) Time Total amount A Total amount A (mg/ml) (mg) (mg) 5 0.16 0.1 10 0.24 0.18 15 0.35 0.25 20 0.48 0.34 25 0.58 0.4 30 0.67 0.5 1. Plot the given data on an ordinary paper and find the slope for each line then calculate the IDR constant for aspirin in the two dissolution media, water and HCI. NOTE: Slope of the calibration curve = 1.0 (mg/ml and saturation solubility of salicylic acid is equal to 2.0 gm/L.acid A student prepares a 1.2 M aqueous solution of benzoic acid (CH,CO,H). Calculate the fraction of benzoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits.
