borax in water. “Borax” is a naturally occurring compound; it is in fact the most important source of the element boron‚ and it has been used for many years as a water softening agent. Borax is a rather complicated ionic salt which has the chemical formula Na2B4O7•10H2O (Petrucci‚ 2007). When it dissolves‚ it dissociates as follows: Na2B4O7 • 10H2O(s) 2Na(aq) + B4O5(OH)42(aq) + 8H2O(l) rnx (1) The solubility product expression for this system is written below. Ksp = [Na]2
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complete parts A1 through A5. 1. Find the x-intercept and y-intercept of the given equation algebraically‚ showing all work. Y = -2/3x + 30 x-intercept 0=-2/3x+30 -30=-2/3X (3/2)(-30)=(-2/3x)(3/2) -45=-x 45=x x-intercept: (45‚0) y-intercept y=-2/3(0)+30 y=30 y-intercept: (0‚30) 2. Graph the given equation. • Label each axis of the coordinate plane with descriptive labels. • Label each intercept as “x-intercept” or “y-intercept” and include the ordered pair.
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Quantitative Chemical Analysis Lab Chemistry 223 Dr. Dean Olson Fall Semester 2013 Friday‚ August 30 Who Am I? B. Chem. – U. of Minnesota‚ Minneapolis M.S. – U. of North Carolina‚ Chapel Hill Environmental Chemistry; Copper kinetics in estuaries Later work: Calcium and magnesium binding to blood coagulation proteins Ph.D. – U. of Illinois; Oscillatory enzyme kinetics NMR Lab Director; see web page ( http://scs.illinois.edu/nmr/ ) 11 magnets‚ 350 users‚ 4 locations
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FSCJ Florida State College at Jacksonville PERT Postsecondary Education Readiness Test Study Guide for Mathematics Note: Pages 1 through 7 are a basic review. Pages 8 forward are more relevant to the content of the PERT mathematics assessment. Assessment and Certification Centers Florida State College Review for PERT Mathematics – Part 1 MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question. Evaluate. 1. 29 16 13 A. 455 C. 58 2. 96 5
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Today’s lecture will be spent entirely in the computer lab. At the end of lab‚ submit this worksheet. Part 1: Weather (3) 1. Open the following link: http://climate.weatheroffice.gc.ca/climateData/canada_e.html 2. Click “customized search” button 3. Search by station name a. Enter “Hamilton” in the text field b. Years: 2006 to 2011 4. Click “Search” 5. For “Hamilton A” station‚ select ‘daily’ in the “data interval drop-down box. 6. Click “Go” You now have access
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Millar Biology statistics made simple using Excel Biology statistics made simple using Excel Neil Millar Spreadsheet programs such as Microsoft Excel can transform the use of statistics in A-level science Statistics is an area that most A-level biology students (and their teachers!) find difficult. The formulae are often complicated‚ the calculations tedious‚ degrees of freedom mysterious‚ and probability tables confusing. But in fact students need no longer grapple with any of these.
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03.01LessonSummary To achieve mastery of this lesson‚ make sure that you develop responses to the essential question listed below. How can a Greatest Common Factor be separated from an expression? By simplifying the equation . By breaking them up by dividing them up What methods can be used to rewrite square trinomials and difference of squares binomials as separate factors? distribution in what conditions can a factored expression be factored further? Greatest Common Factor A greatest common factor
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(INCOMEPC) In general‚ we expect the increase of state Income per capita make the state spends more money on aid to local school districts per capita. Therefore‚ we expect β1>0. (b)Estimate the regression model Coefficients Standard Error t Stat Intercept -0.499260665 1.475737675 -0.33831261 INCOMEPC 0.053681383 0.044917266 1.195116879 Chart A.1 As the information demonstrated in Table A.1‚ we can estimated the regression model as
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velocity of 350 feet per second. The gravitational force of Earth is pulling the rocket down at a rate of 16 feet per second per second. The formula for‚ s(t)‚ for the function that models the height of the water balloon at time t‚ in seconds‚ is s(t)= -16t2 + 350t + 4. We can determine how long it takes for the rocket to land from the graph where the function intercepts the x-axis because this is the value where the height of the rocket is 0 feet. From the graph‚ we can see that the rocket lands in 21
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Powered by Cognero Use the slope formula to find the slope of the sides of the trapezoid. Use the slope formula to find the slope of the sides of the trapezoid. The slopes of exactly one pair of opposite sides are equal. So‚ they are parallel. Therefore‚ the quadrilateral ABCD is a trapezoid. ANSWER: ABCD is a trapezoid. 4. Determine whether ABCD is an isosceles trapezoid. Explain. SOLUTION: Refer to the graph of the trapezoid. Use the slope formula to find the slope of the sides of Page 1 the
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