Reference no: EM13119901
Part 1: Using the Library, web resources, and/or other materials, find the logarithmic formula that gives the pH of a substance. State what each variable in your equation represents.
Find the pH of a substance of your choice that is alkaline (basic). Using this pH, show how to find the hydrogen ion concentration, [H+], of the substance using the formula. Discuss the meaning of pH and [H+], the pH scale and why your chosen substance is alkaline. Use scientific notation or enough decimal places so that your answer has at least 3 place values. For example, either use 3.44*10-9 or 0.00000000344.
Part 2: Part 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p * at , where p is the number of new homes built in the first year recorded. If you were a home builder looking for work, would you prefer that the value of a to be between 0 and 1 or larger than 1? Explain your reasoning.
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Determining algebra - order of operations
: What are the steps of the order of operations? Why is it important that you follow the steps rather than solve the problem from left to right? Write an expression for someone to simplify using at least three of the following:
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Calculate the new volume
: if 525 mL of gas at 25 degrees celcius is heated to 50 degrees celcius at constant pressure, calculate the new volume.
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Conditional probability ball colour
: Conditional Probability: Ball Colour, An urn contains four coloured balls: two orange and two blue. Two balls are selected at random without replacement, and you are told that at least one of them is orange.
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Illustrate what is the velocity of the shoe
: A parachutist descending at a speed of 13.4 m/s loses a shoe at an altitude of 54.2 m. Illustrate what is the velocity of the shoe just before it hits the ground? The acceleration of gravity is 9.81 m/s2.
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Logarithmic formula that gives ph of substance
: Using the Library, web resources, and/or other materials, find the logarithmic formula that gives the pH of a substance. State what each variable in your equation represents.
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Probability and chance one ball in each box
: Probability and chance A prison has 20 balls, 10 black and 10 white. The prisoner is to arrange the balls in 2 boxes. All of the balls must be used and there must be at least one ball in each box.
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Subsets of a finite set
: Determine the number of subsets of the set A = {a, b, c, d, e, f}, without writing them down. Determine the number of subsets of the set B = {a, b, c, d, e, f, g, h, i} , without writing them down.
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Illustrate what diameter has tip of the hour hand
: Illustrate what diameter has tip of the hour hand with 100 mil/hr tangential speed? If a 10 inch wide top is spinning at 300 RPM, what is the tangential speed at the widest part?
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Calculate the enthalpy of the reaction
: Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation: 1/2 N2(g) + O2(g) --> NO2(g), delta H *A = 33.2 kJ 1/2 N2(g) + 1/2O2(g) --> NO(g), delta H *B= 90.2 kJ
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