Gaseous iodine pentafluoride, IF5, can be prepared by the reaction of solid iodine and gaseous fluorine: I2(s) + 5 F2(g)→2 IF5(g)

A 5.00-L flask containing 10.0 g of I2 is charged with 10.0 g of F2, and the reaction proceeds until one of the reagents is completely consumed. After the reaction is complete, the temperature in the flask is 125 °C. (a) What is the partial pressure of IF5 in the flask? (b) What is the mole fraction of IF5 in the flask (c) Draw the Lewis structure of IF5. (d) What is the total mass of reactants and products in the flask?

PRECALCULUS LINEAR EQUATIONS (IN TWO VARIABLES) The graph of a linearequation is a straight line SLOPE isthe change in the y variableper unitinthex variable = run The slope of a line is passing through two1po1nts ( 2 , 2 )and ( X , Y ) ( 1 ,1Y ) 2− 1 = − ( X2, 2 ) 2 1 Negative slope Positive slope Givenslope “m” and one point onthe line ( X , Y ), the y-intercept is giving by 1 1 = 1− 1 Givenslope “m” and one point onthe line its equationisgiven1by − =1( − ) 2−1 Givenslope “m” and two points on the line its equation − 1 ( by )( − 1) 2−1 Two lines are parallel w1en 2 = m Two lines are perpendicularw = 1 1 2 EXAMPLE Find the equation of a line passing through (0, 2) which is perpendicular to a line with the equation 6x+4y=8 1) Find the slope of the equation. 6 + 4 = 8 4 = −6 + 8 SLOPE = − + 8 4 4 4 2) For a perpendicular slop =se6 3) Find the y-intercept = 1− 1 4 = 2 − ( ) 0( ) 6 = 2 The equation oftheline is 4 = 6+ 2 When ahorizontalline passing through (0,a) itsequation isy=a When averticalline ispassing through(a,0)itsequation isx=a